Pharmacy Technician PTCB Practice Test

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How many 250 mg tablets of metronidazole are needed to make 150 mL of suspension containing 100 mg/mL?

  1. 25

  2. 30

  3. 50

  4. 60

The correct answer is: 60

To find out how many 250 mg tablets of metronidazole are needed to make 150 mL of suspension containing 100 mg/mL, we need to calculate the total amount of metronidazole needed for the suspension. The concentration of the suspension is 100 mg per mL, and we need to make 150 mL of this suspension. So, the total amount of metronidazole needed is: 100 mg/mL * 150 mL = 15000 mg Since each tablet is 250 mg, we can find out how many tablets are needed by dividing the total amount needed by the amount in each tablet: 15000 mg / 250 mg per tablet = 60 tablets Therefore, the correct answer is D.

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