Question

1. A pharmacist has 4gm of acetaminophen to compose compressed tablets of 500mg of acetaminophen each. How many tablets can the pharmacist prepare?

2. If a pharmacy dispenses 3L of X solution packed in 120ml bottles, How many 120ml jars will be needed?

3. For a child weighing 22lbs the dose of Zithromax is 100mg daily for 3 days. If the dispensed bottle contains 0.5gm of Zithromax, how many doses can be served? that jar?

4. A pharmaceutical industry produces 75,000 tablets of a certain drug daily in units of mg. If you use 2,500gm of active ingredient to make them, how many mg is each tablet? (Hint: 1gm = 1000mg)

5.   7.5mg should be dispensed for each dose of a drug. The patient will take it two times a day for 7 days. In the pharmacy for that medicine the tablets available they are 3.75mg. How many tablets will the patient take in each dose? How many tablets are there what to dispense?

Answer 1

1st Answer: Pharmacist has 4gm which is equal to 4000mg.

He has to compose each tablet at 500mg

Therefore tablets he can make with 4000mg that is available is 4000 / 500 = 8 tablets

2nd Answer: Pharmacist has 3L solution.

Converting L to ml ; 3000ml

He has to make jars of 120ml each

So, no. of jars he can make = 3000ml /120ml = 25 jars of X solution can be made.

3rd Answer: The dose of Zithromax is 100mg daily for 3 days, which means we need; 300mg

The dispensed bottle contains 0.5gm which is equivalent to 500mg.

Therefore, as per the above statement, we have enough medicine for 3 days and in addition we have 200mg left which could be used for 2 more days if required.

4th Answer: The pharmaceutical company makes 75,000 tablets in units of mg.

The active ingredient used is 2500gm, converting gm to mg; 2500000mg

Therefore mg per tablet = Total active ingredient in mg / number of tablets to be made

= 2500000 / 75000

=33.3333 or 33 mg per tablet

5th Answer: 7.5mg for each dosage and we need 2 dose per day for 7 days

Therefore 7.5 X2 = 15mg X 7 days = 105mg for 7 day dose

We have the medicine at 3.75mg, so per dose we would require 2 tablets since 3.75 X 2 = 7.5 and per day we would require 4 tablets of 3.75 each to get 15mg per day.

For 7 days, we need 4 tablets (3.75mg) X 7 days = 28 tablets (3.75mg each)