NEED HELP with MATH CALCULATIONS

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ohio in Mason, Ohio 28 months ago	OSU in Portland, Oregon said: I need help with some math calculations, i think the percentages and ratios throw me off. Can you please help me set-up the problem or tell me which formulas to use. Thanks! How many 200mg tablets would be required to make .5 liters of a 1:250 solution? How many milliliters of a 3% solution need to be used with a 12% solution in preparing 450ml of a solution? A techncian has been given 300 ml of a 15% hydrochoric acid solutiion. The pharmacist asks the techncian to dilute the solution to 1000ml with sterile water and to label the final solution. What percent should appear on the label? You are asked to make 150ml of a 3% NA borate solution. Using 5% Na Borate stock solution and water, how much of each do you need? 10 Tabs second question needs to have a final concentration to answer. 4.5% 90ml - Was this comment helpful? Yes (9) / No (17) Reply - Report abuse
mr in Buffalo, New York 28 months ago	I have a published an E-book that you might find useful. The E-book 'The Pharmacy Calculations Workbook" has numerous prescription based problems that could be helpful. The web site is www.pharmacycalculations.org - Was this comment helpful? Yes (3) / No (1) Reply - Report abuse
ebony harrell in Saint Petersburg, Florida 27 months ago	im stuck on a problem on my calculations homework a physician asks the pharmacy to prepare 0.5L of a 1:5000 epinephrine solution. the availablesolution is 1:1000 how many ml of the solute are needed? how many ml of solvent are needed? someone please help me with this question!!!!! - Was this comment helpful? Yes (11) / No (1) Reply - Report abuse
mattlorico in Los Angeles, California 27 months ago	ebony harrell in Saint Petersburg, Florida said: im stuck on a problem on my calculations homework a physician asks the pharmacy to prepare 0.5L of a 1:5000 epinephrine solution. the availablesolution is 1:1000 how many ml of the solute are needed? how many ml of solvent are needed? someone please help me with this question!!!!! =There is a lot of ways to do this, however the easiest one is: 1/5000 x 1000/1 x 500 ml = 100 ml another way turn the ratio into percent and use the order divide by the supply multiply by the quantity 1/5000 x 100= 0.02% 1/1000 x 100% = 0.1% using order divide by supply will give you 0.2/0.1 x 500 = 100 ml - Was this comment helpful? Yes (6) / No (11) Reply - Report abuse
ebony harrell in Saint Petersburg, Florida 27 months ago	mattlorico in Los Angeles, California said: =There is a lot of ways to do this, however the easiest one is: 1/5000 x 1000/1 x 500 ml = 100 ml another way turn the ratio into percent and use the order divide by the supply multiply by the quantity 1/5000 x 100= 0.02% 1/1000 x 100% = 0.1% using order divide by supply will give you 0.2/0.1 x 500 = 100 ml aw thank you so much - Was this comment helpful? Yes (2) / No (1) Reply - Report abuse
dani in Blacksburg, Virginia 27 months ago	ohio in Mason, Ohio said: 10 Tabs second question needs to have a final concentration to answer. 4.5% 90ml Hi! Can someone show me how to get this answer? Thanks :-) - Was this comment helpful? Yes (3) / No (1) Reply - Report abuse
dani in Blacksburg, Virginia 27 months ago	dani in Blacksburg, Virginia said: Hi! Can someone show me how to get this answer? Thanks :-) How many 200mg tablets would be required to make .5 liters of a 1:250 solution? - Was this comment helpful? Yes / No (4) Reply - Report abuse
cathy in Beaumont, Texas 27 months ago	I have 2 question concerning insulin : 750 mcl of U-100 IS EQUAL TO HOW MANY UNITS? A PATIENT IS PRESCRIBED INSULIN AS FOLLOWERS: HUMULIN R REGULAR OD U-100 INSULIN 34 U SQ 1/2 HOUR AFTER BREAKFAST. CALCULATE THE AMOUNT TO ADMINISTER IN mL. I NEED TO KNOW HOW TO FIGURE THESE. - Was this comment helpful? Yes (1) / No (1) Reply - Report abuse
Lester in Los Angeles, California 27 months ago	dani in Blacksburg, Virginia said: How many 200mg tablets would be required to make .5 liters of a 1:250 solution? xmg/500ml=1000mg/250ml x=2000mg 2000mg divide 200mg=10 10 tblets - Was this comment helpful? Yes (7) / No (7) Reply - Report abuse
dani in Vinton, Virginia 27 months ago	Thank you. :-) - Was this comment helpful? Yes / No (2) Reply - Report abuse
donna in Jonesborough, Tennessee 27 months ago	I need help with this problem. How much gentian violet is needed to prepare 100ml of a 1:10,000 solutin of gentian violet? If anyone knows please show how to get the answer. - Was this comment helpful? Yes (9) / No (3) Reply - Report abuse
donna in Jonesborough, Tennessee 27 months ago	How many ml of a 20% solution should be added to 50 ml of a 40% solution to obtain a 25% solution? please show how to get answer if anyone knows. - Was this comment helpful? Yes (9) / No (2) Reply - Report abuse
Gatorbob in Sebring, Florida 27 months ago	donna in Jonesborough, Tennessee said: How many ml of a 20% solution should be added to 50 ml of a 40% solution to obtain a 25% solution? please show how to get answer if anyone knows. Name Concentration 40.0000 % OR mg / ml Volume (opt) 50.00 ml Name Concentration 20.0000 % OR mg / ml Volume (opt) 150.00 ml Name Concentration 25.0000 % OR mg / ml Volume (opt) 200.00 ml ------------------------------------------------------ 50.00 ml ( 20000.00 mg) 150.00 ml ( 30000.00 mg) 200.00 ml ( 50000.00 mg) 25.0000 gm / 100 ml 25.0000 % or set up an alligation problem as follows: 40 \| \| 5 parts = 50 ml or 10 ml per part \| \| \| 25 \| \|Final Conc\| 20 \| \|15 parts then equal 150 ml Total Parts for 25% equal 200 ml total Hope this helps - Was this comment helpful? Yes (3) / No (1) Reply - Report abuse
donna in Jonesborough, Tennessee 27 months ago	Gatorbob in Sebring, Florida said: Name Concentration 40.0000 % OR mg / ml Volume (opt) 50.00 ml Name Concentration 20.0000 % OR mg / ml Volume (opt) 150.00 ml Name Concentration 25.0000 % OR mg / ml Volume (opt) 200.00 ml ------------------------------------------------------ 50.00 ml ( 20000.00 mg) 150.00 ml ( 30000.00 mg) 200.00 ml ( 50000.00 mg) 25.0000 gm / 100 ml 25.0000 % or set up an alligation problem as follows: 40 \| \| 5 parts = 50 ml or 10 ml per part \| \| \| 25 \| \|Final Conc\| 20 \| \|15 parts then equal 150 ml Total Parts for 25% equal 200 ml total Hope this helps thank you - Was this comment helpful? Yes (1) / No Reply - Report abuse
Linda Thompson in Tyler, Texas 26 months ago	I really need help solving this problem and show me the formula on how you get the answer a prescription is written for salicylic acid 1%, menthol 1/4% in triamcinolone0.1% cream. How much salicylic acid powder should be used if the prescription is for 240gm? Thank You - Was this comment helpful? Yes (7) / No (2) Reply - Report abuse
Jessica in Concord, California 26 months ago	During the middle of my final my tutot left, can you helkp me - Was this comment helpful? Yes / No Reply - Report abuse
DORIS SANTAN in Los Angeles, California 25 months ago	I NEED HELP PLZ SOMEONE!!! ORDER: 1000 cc NS IV for 24 h KVO ( to keep the vein open) Drop Factor: 60 gtt/mL Flow rate: _____ gtt/min - Was this comment helpful? Yes (4) / No (1) Reply - Report abuse
Pufik in Santa Ana, California 25 months ago	Ok, 1cc = 1ml , 1000 cc = 1000 ml 1000 ml (1h) 60 gtt -------- ---- ------ = 41,67 gtt/min 24 h 60 min 1ml - Was this comment helpful? Yes (1) / No (2) Reply - Report abuse
DORIS SANTAN in Los Angeles, California 25 months ago	OK THNKS HERES A ANOTHER THE ORDER READS PENICILLIN G 200,000U I.M THE VIAL PENICILLLIN G 250,000 U PER mL. How much should I give? - Was this comment helpful? Yes (4) / No (1) Reply - Report abuse
DORIS SANTANA in Los Angeles, California 25 months ago	HOW DO I WORK IN THIS PROBLEM WITH A FRACTION ORDER: 1500 mL 2 1/2% D5W IV for 12 h DROP FACTOR: 15 GTT/mL FLOW RATE: __________gtt/min. - Was this comment helpful? Yes (4) / No (1) Reply - Report abuse
Pufik in Santa Ana, California 25 months ago	200.000 250.000 -------- = ------- x = 0.8 ml Xml ml - Was this comment helpful? Yes (1) / No (1) Reply - Report abuse
Pufik in Santa Ana, California 25 months ago	1500ml/12h (1h/60min) (15gtt/ml) = 375 gtt/min - Was this comment helpful? Yes (1) / No (7) Reply - Report abuse
Nohemi contreras in Santa Monica, California 25 months ago	order: penicillin 400,000 U IM q,3h Supply: A 20 mL vial containing 1,000,000 U of Penicilling in dry form. Directions: Adding 3.6 mL diluent yields 250,000 U/mL Give: __________? my answer is 0.4mL i dont know if its right ... - Was this comment helpful? Yes (2) / No Reply - Report abuse
Pufik in Santa Ana, California 25 months ago	yes i think you are right. - Was this comment helpful? Yes / No Reply - Report abuse
Joyce in Houston, Texas 25 months ago	donna in Jonesborough, Tennessee said: I need help with this problem. How much gentian violet is needed to prepare 100ml of a 1:10,000 solutin of gentian violet? If anyone knows please show how to get the answer. 1g in 10,000mL solution 1000mg per 10,000mL solution 1mg per 10mL so, 100mL divided by 10mL equals 10mL 10mL is your answer. - Was this comment helpful? Yes (2) / No Reply - Report abuse
elizabeth thompson in Sumter, South Carolina 23 months ago	prepare 220mg of digoxin in using the stock concentration of 80mg/4ml - Was this comment helpful? Yes (2) / No Reply - Report abuse
sharon in Deerfield Beach, Florida 20 months ago	A physician ordered 600.000 U penicillin PO q6h. The available drug is 400.000 U per scored tablet. How many tablets you will administer. - Was this comment helpful? Yes / No Reply - Report abuse
pam in Los Angeles, California 19 months ago	i need help finding out the weight of fluids on the iv bags, how do you do it? - Was this comment helpful? Yes / No Reply - Report abuse
pam in Los Angeles, California 19 months ago	i need help figuring out the weight of fluids in an iv bag, how do you do that? - Was this comment helpful? Yes / No Reply - Report abuse
pam in Los Angeles, California 19 months ago	i need help finding the weight of fluids in the iv bags, what is the formula? - Was this comment helpful? Yes / No Reply - Report abuse
sharon in West Palm Beach, Florida 18 months ago	OSU in Portland, Oregon said: I need help with some math calculations, i think the percentages and ratios throw me off. Can you please help me set-up the problem or tell me which formulas to use. Thanks! How many 200mg tablets would be required to make .5 liters of a 1:250 solution? How many milliliters of a 3% solution need to be used with a 12% solution in preparing 450ml of a solution? A techncian has been given 300 ml of a 15% hydrochoric acid solutiion. The pharmacist asks the techncian to dilute the solution to 1000ml with sterile water and to label the final solution. What percent should appear on the label? You are asked to make 150ml of a 3% NA borate solution. Using 5% Na Borate stock solution and water, how much of each do you need? Forgot where to go to ask a question (HELP)!!!!!! THANKS - Was this comment helpful? Yes / No Reply - Report abuse
Shannon in Windsor, Ontario 18 months ago	Dilaudid HP 10mg/ml Cassette Available 10mg/ml a) To make a 100ml cassette, how many mg's of Dilaudid HP is it? b) Running at 2ml/hr how long will 1 cassette last? c) 28ml TBA at 9am the next cassette is due when? - Was this comment helpful? Yes / No Reply - Report abuse
CPhT in Plainfield, Illinois 18 months ago	Shannon in Windsor, Ontario said: Dilaudid HP 10mg/ml Cassette Available 10mg/ml a) To make a 100ml cassette, how many mg's of Dilaudid HP is it? b) Running at 2ml/hr how long will 1 cassette last? c) 28ml TBA at 9am the next cassette is due when? A.) 10mg = 1 ml X = 100 ml ----10 X 100 / 1 = 1000mg B.)2 ml = 1 hr 100ml = X ---------- 100 X 1 / 2 = 50 hours [50 hours is 2 1/2 days] C.) 100ml = 50 hours 28ml = X --------28 X 50 / 100 = 14 hours - Was this comment helpful? Yes (1) / No Reply - Report abuse
CPhT in Plainfield, Illinois 18 months ago	Shannon in Windsor, Ontario said: Dilaudid HP 10mg/ml Cassette Available 10mg/ml a) To make a 100ml cassette, how many mg's of Dilaudid HP is it? b) Running at 2ml/hr how long will 1 cassette last? c) 28ml TBA at 9am the next cassette is due when? A.) 10mg = 1 ml X = 100 ml ----10 X 100 / 1 = 1000mg B.)2 ml = 1 hr 100ml = X ---------- 100 X 1 / 2 = 50 hours [50 hours is 2 1/2 days] C.) 100ml = 50 hours 28ml = X --------28 X 50 / 100 = 14 hours Pharmacy Rx owner - Was this comment helpful? Yes / No (1) Reply - Report abuse
casey in Northridge, California 17 months ago	ohio in Mason, Ohio said: 10 Tabs second question needs to have a final concentration to answer. 4.5% 90ml How do you solve it??? - Was this comment helpful? Yes / No Reply - Report abuse
Dnorth in Pocahontas, Iowa 17 months ago	I am looking to get how to get the answer, not the answer to the following: 0.027 gm = _____ mcg Also I need to convert apothecary units: 30 gr = _______ounce and 1 fl dram = _____ fl oz. convert household measurements: 10 ml = ______tsp - Was this comment helpful? Yes (1) / No Reply - Report abuse
lalala in West Covina, California 17 months ago	Dnorth in Pocahontas, Iowa said: I am looking to get how to get the answer, not the answer to the following: 0.027 gm = _____ mcg Also I need to convert apothecary units: 30 gr = _______ounce and 1 fl dram = _____ fl oz. convert household measurements: 10 ml = ______tsp first problem 1 gram = 1,000,000 micrograms so if you divide each side by 1 gram you get 1 = 10^6 micrograms/1 gram it's equal to one because 1 gram and 10^6 micrograms are the same thing. it's just like saying 3/3 = 1 and t/t = 1 moreover, if you multiply anything by 1, that anything is still the same thing. so if you multiply 0.027 grams by 1, it's still 0.027. if you multiply 0.027 grams by 10^6 micrograms/1 gram, the mass is still gonna be worth 0.027, it's still the same amount, just the unit changes. 0.027 grams x 10^6 micrograms --------------- 1 gram so you multiply 0.027 grams by 1 (which in this case is 10^6 micrograms/1 gram). the unit of grams cancel out so you get 0.027 x 10^6 micrograms which simplifies to 27,000 micrograms or 2.7x10^4 micrograms - Was this comment helpful? Yes / No Reply - Report abuse
lalala in West Covina, California 17 months ago	holy crap it messed up all of my spacing. ugh - Was this comment helpful? Yes / No Reply - Report abuse
lalala in West Covina, California 17 months ago	Dnorth in Pocahontas, Iowa said: I am looking to get how to get the answer, not the answer to the following: 0.027 gm = _____ mcg Also I need to convert apothecary units: 30 gr = _______ounce and 1 fl dram = _____ fl oz. convert household measurements: 10 ml = ______tsp alright here's an easier way, skipping all the background and work. 1 gram = 1,000,000 micrograms you have 0.027 grams, so multiply both sides of the equation by 0.027 so now you have 0.027 grams = 27,000 micrograms just do the same thing to the other problems. you should have the equalities in your text, or you can easily find them online - Was this comment helpful? Yes (1) / No Reply - Report abuse
Dnorth in Pocahontas, Iowa 17 months ago	Thank you for your help. I am just getting started as a pharmacy tech & hope to get certified in the next couple of months. Appreciate all the help and any suggestions. - Was this comment helpful? Yes / No Reply - Report abuse
Lou in Overland Park, Kansas 16 months ago	Gatorbob in Sebring, Florida said: Name Concentration 40.0000 % OR mg / ml Volume (opt) 50.00 ml Name Concentration 20.0000 % OR mg / ml Volume (opt) 150.00 ml Name Concentration 25.0000 % OR mg / ml Volume (opt) 200.00 ml ------------------------------------------------------ 50.00 ml ( 20000.00 mg) 150.00 ml ( 30000.00 mg) 200.00 ml ( 50000.00 mg) 25.0000 gm / 100 ml 25.0000 % or set up an alligation problem as follows: 40 \| \| 5 parts = 50 ml or 10 ml per part \| \| \| 25 \| \|Final Conc\| 20 \| \|15 parts then equal 150 ml Total Parts for 25% equal 200 ml total Hope this helps How did you figure out the 150ml and the 200 ml. 50ml is the only volume given - how did you figure a final volume to divide the parts into and then multiply parts by the volume? Could you explain this - I'm not getting it. Thanks Lou - Was this comment helpful? Yes / No Reply - Report abuse
Keri 15 months ago	if 750 ml of a 2% solutionis diluted by 40% of its volume, what is the new concentration in mg/ml? - Was this comment helpful? Yes (3) / No (1) Reply - Report abuse
MorganR in Los Angeles, California 11 months ago	I am searching for the equation to use to dilute a solution of 40 mg/ml to make a solution of 5mg/ml I have a 30ml vial of Saline and a 5ml vial of Kenalog 40mg/ml I need to end with a 30ml vial of Kenalog 5mg/ml Does anyone have the equation I should use to calculate my answer? I have hit the wall and this simple (I assume) solution just has me floored!! Thank you! - Was this comment helpful? Yes / No Reply - Report abuse
MorganR in Los Angeles, California 11 months ago	I am searching for the equation to use to dilute a solution of 40 mg/ml to make a solution of 5mg/ml I have a 30ml vial of Saline and a 5ml vial of Kenalog 40mg/ml I need to end with a 30ml vial of Kenalog 5mg/ml Does anyone have the equation I should use to calculate my answer? I have hit the wall and this simple (I assume) solution just has me floored!! Thank you! - Was this comment helpful? Yes / No Reply - Report abuse
MorganR in Los Angeles, California 11 months ago	oops...sorry for the repeat... - Was this comment helpful? Yes / No Reply - Report abuse
MorganR in Los Angeles, California 11 months ago	ok, fog lifted...figured it out. - Was this comment helpful? Yes / No Reply - Report abuse
teresa in Reno, Nevada 11 months ago	i need help rx prolixin 4mg/5ml concentrate # sig: 6mg po tid x 90 days how many mlsof the drug is required per dose? how many mls of the drug is required per day? how many mls of the drug is required for the entire treament? - Was this comment helpful? Yes / No Reply - Report abuse
cpht in Lockport, Illinois 11 months ago	teresa in Reno, Nevada said: i need help rx prolixin 4mg/5ml concentrate # sig: 6mg po tid x 90 days how many mlsof the drug is required per dose? how many mls of the drug is required per day? how many mls of the drug is required for the entire treament? Prolixin is a antipsychotic drug. Dr. is prescribing the drug in liquid form so we will need to figure out how many ml's is 6mg from the sig provided. 4mg = 5ml 6mg = X ml ------ 6mg x 5ml / 4mg = 7.5ml {So 7.5ml equals 6mg of the drug} Per dose: 7.5ml Per day: 7.5ml x 3x a day (tid) = 22.5ml Entire treatment: 22.5ml x 90 days= 2025ml (that is alot of liqiuid medication) Crystal Zamudio, CPhT Pharmacy Rx Owner www.wiziq.com/tutor-profile-crysta - Was this comment helpful? Yes / No Reply - Report abuse
cpht in Lockport, Illinois 11 months ago	teresa in Reno, Nevada said: i need help rx prolixin 4mg/5ml concentrate # sig: 6mg po tid x 90 days how many mlsof the drug is required per dose? how many mls of the drug is required per day? how many mls of the drug is required for the entire treament? Prolixin is a antipsychotic drug. Dr. is prescribing the drug in liquid form so we will need to figure out how many ml's is 6mg from the sig provided. 4mg = 5ml 6mg = X ml ------ 6mg x 5ml / 4mg = 7.5ml {So 7.5ml equals 6mg of the drug} Per dose: 7.5ml Per day: 7.5ml x 3x a day (tid) = 22.5ml Entire treatment: 22.5ml x 90 days= 2025ml (that is alot of liqiuid medication) Crystal Zamudio, CPhT Pharmacy Rx Owner www.wiziq.com/tutor-profile-crysta - Was this comment helpful? Yes / No Reply - Report abuse
Roe Stubs in Wylie, Texas 5 months ago	DORIS SANTAN in Los Angeles, California said: I NEED HELP PLZ SOMEONE!!! ORDER: 1000 cc NS IV for 24 h KVO ( to keep the vein open) Drop Factor: 60 gtt/mL Flow rate: _____ gtt/min gtt/mim= 1hr/60min -1000ml/10hrs-60gtt/ml=you first multiply all numbers at the top= 1x1000x60=60000, then multiply all at the bottom=60x10=600. Then divide the top number by the bottom number=60000/600=100 drops/min - Was this comment helpful? Yes / No (3) Reply - Report abuse

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NEED HELP with MATH CALCULATIONS

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