Percent, Ratio, mg per mL mixed

3. Percent, Ratio, mg/mL, PPM, PPB 3.1) Percent 3.1.2) Percent, Ratio etc Mixed Percent, Ratio etc Mixed Normal 1

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Express the ratio strength of a 0.385 % w/v solution.

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lb equals 1 : 260 kg

    The strength 0.385 % w/v means, there is 0.385 g of drug dissolved in each 100 mL of the solution. We need to convert this to a suitable ratio which has 1 in the numerator. Therefore, `(0.385 \quad g)/(100\quad mL)=((0.385/0.385)\quad g)/(100/0.385\quad mL)=(1\quad g)/(260\quad mL)`.

    Therefore, the ratio strength is 1 : 260.