Question

A doctor writes a prescription for 200ml of Bactrim solution for an ear infection. The pharmacy technician uses 50g of the powdered drug from stock. What is the percent strength of the resulting solution?

a) 20%
b) 25%
c) 30%
d) 35%

Answer 1

The percent strength of the resulting solution is 25%.

Step-by-step explanation:

To determine the percent strength of the resulting solution, we need to calculate the concentration of the drug in the solution. The given prescription is 200 mL of Bactrim solution. The pharmacy technician uses 50 g of the powdered drug from stock. To calculate the percent strength, we use the formula:

Percent Strength = (Mass of Drug / Volume of Solution) * 100%

Mass of Drug = 50 g, Volume of Solution = 200 mL

Percent Strength = (50 g / 200 mL) * 100% = 25%

Therefore, the percent strength of the resulting solution is 25%.