ExCPT Test ExCPT Pharmacy Calculations 3

Question 1

A patient requires 0.025 mg of digoxin. The available tablets are 0.125 mg. What fraction of a tablet should be given?

Accepted Answer

1/5 tablet

Answer

0.025 mg ÷ 0.125 mg = 0.2, which equals 1/5 of a tablet.

Question 2

If a cream is labeled 2.5% w/w, how many mg of active ingredient are in a 30 g tube?

Accepted Answer

750 mg

Answer

2.5% of 30 g = 0.75 g = 750 mg.

Question 3

How many teaspoons are equivalent to 15 mL?

Accepted Answer

3 teaspoons

Answer

1 teaspoon = 5 mL; 15 mL ÷ 5 mL/tsp = 3 teaspoons.

Question 4

An order calls for KCl 40 mEq to be added to 1 L NS. Available is KCl 2 mEq/mL. How many mL should be added?

Accepted Answer

20 mL

Answer

40 mEq ÷ 2 mEq/mL = 20 mL of KCl solution.

Question 5

A pharmacy's markup policy is 20% above acquisition cost. If a drug costs $12.50, what is the retail price?

Accepted Answer

$15.00

Answer

$12.50 × 1.20 = $15.00 retail price.

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