A hypertensive client is prescribed 7.5 mg of enalapril maleate. Each available tablet contains 5 mg of the drug. How many tablets does the client need to take daily?
A) 1 tablet
B) 11/2 tablets
C) 2 tablets
D) 21/2 tablets
B
Feedback:
The client needs to take 1½ tablets daily. One tablet is 5 mg enalapril; 7.5 mg of the drug can be obtained from 7.5/5 tablets. Multiplying both the denominator and the numerator by 10, we get 75/50 tablets. When the common factors are cancelled, we get 3/2 tablets. When this improper fraction is converted to a mixed fraction, we get 1½ tablets. Thus, the client will need to take 1½ tablets daily, not 1 tablet, 2 tablets or 2½ tablets daily.
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