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A doctor needs to administer 2 mL of a 100 mg/mL solution to a 200-pound patient. However, the doctor has the solution available only in 20 mg/mL strength. What volume of the 20 mg/mL solution would be needed to administer the desired dose?

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  1. 2 ml of 100 mg/ml is 200 mg
    to get 200 mg he needs 10 ml of the weaker solution

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