ExCPT Test ExCPT Pharmacy Calculations 2 — Questions and Answers
Question 1: A pediatric dose of ibuprofen is 10 mg/kg. The patient weighs 44 lbs. What is the correct dose in mg?
- 200 mg (Correct answer)
- 440 mg
- 400 mg
- 220 mg
Correct answer: 200 mg
44 lbs ÷ 2.2 = 20 kg; 20 kg × 10 mg/kg = 200 mg.
Question 2: How many milliliters are in 2.5 liters?
- 250 mL
- 25 mL
- 2,500 mL (Correct answer)
- 0.25 mL
Correct answer: 2,500 mL
1 liter = 1,000 mL, so 2.5 liters = 2,500 mL.
Question 3: A prescription reads: 'Take ii tabs tid × 10 days.' How many tablets should be dispensed?
- 20 tablets
- 60 tablets (Correct answer)
- 30 tablets
- 40 tablets
Correct answer: 60 tablets
2 tablets × 3 times/day × 10 days = 60 tablets.
Question 4: What is the flow rate in gtt/min for 1,000 mL of NS to be infused over 8 hours using a 15 gtt/mL drip set?
- 31 gtt/min (Correct answer)
- 15 gtt/min
- 21 gtt/min
- 42 gtt/min
Correct answer: 31 gtt/min
1,000 mL ÷ 480 min × 15 gtt/mL ≈ 31.25, rounded to 31 gtt/min.
Question 5: A compounding formula requires 30% of ingredient A and 70% of ingredient B. If making 120 g total, how many grams of ingredient A are needed?
- 30 g
- 36 g (Correct answer)
- 40 g
- 84 g
Correct answer: 36 g
30% × 120 g = 0.30 × 120 = 36 g of ingredient A.
Question 6: Convert 98.6°F to Celsius.
- 32°C
- 37°C (Correct answer)
- 40°C
- 36°C
Correct answer: 37°C
(98.6°F − 32) × 5/9 = 66.6 × 0.555 = 37°C.
ExCPT Test ExCPT Pharmacy Calculations 2
A pediatric dose of ibuprofen is 10 mg/kg.
The patient weighs 44 lbs.
What is the correct dose in mg?