Question

question 41

a pharmacy has a medication in stock at a concentration of \\(250\text{ mg}/5\text{ ml}\\). a prescription calls for \\(375\text{ mg}\\). how many \text{ml} should the technician measure?

• \\(6\text{ ml}\\)
• \\(7.5\text{ ml}\\)
• \\(10\text{ ml}\\)
• \\(5\text{ ml}\\)

Explanation:

Set up the proportion

Using the Pharmacy Calculations and Dosage Calculations knowledge points

$$ \frac{250\text{ mg}}{5\text{ mL}} = \frac{375\text{ mg}}{x\text{ mL}} $$

Solve for the volume

Using the Pharmacy Calculations and Dosage Calculations knowledge points

$$ x = \frac{375\text{ mg} \times 5\text{ mL}}{250\text{ mg}} = 7.5\text{ mL} $$

Answer:

• (A) 6 mL
• (B) 7.5 mL (Correct answer)
• (C) 10 mL
• (D) 5 mL