Determine drug quantity from ratio strength and volume

3. Percent, Ratio, mg/mL, PPM, PPB 3.2) Ratio 3.2.1) Ratio - General

3.2.1.1) Ratio - General Normal 1


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The strength of a medication is expressed as 1 : 460. Determine the quantity of drug in 680 mL of this product.


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lb equals 1.478 g kg

    1 : 460 means, 1 g of drug is present in each 460 mL of the solution.

    To determine the gram amount of drug present in 680 mL of the solution we can write:
    `(1 \quad g)/(460 \quad mL)=x/(680 \quad mL) therefore x = 1.478 ` g.

    Answer.