math

a pharmacist failed to place the balance in equilibrium before weighing 200mg of a drug. later, he discovered a 20% error was incurred. If the balance pan on which he placed the drug to be measured was heavy, how much of the drug in milligrams did he actually weigh?

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asked by faye
  1. 200 * 1.2 = 240 mg.

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    posted by Henry

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