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Question:
An inpatient received a certain dosage of a drug on Wednesday. The dosage was decreased by 20% on Thursday. If the patient received 464 milligrams of the drug on Thursday, what was the dosage received on Wednesday? Round your answer to the nearest milligram.
A
580 mg.
explanation
1212If the dosage was decreased by 20% , then the Thursday dose was 80% (100%−20%) of the Wednesday dose.
80% of Wednesday dose = Thursday dose:
\((0.80)(x)=464\)
\(x=\frac{\mathrm{464} }{\mathrm{0.80}}\)
Wednesday dose = 580 mg
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