* Express the strength of a solution in the form of a fraction, a ratio, and a percent if 200 mL of the solution contain 50 mL of a drug. * Express the strength of a solution in the form of a fraction, a ratio, and a percent if 8 mL of the solution contain 3 g of a drug. * How many milliliters of a 0.5% solution contain 4 grams of a drug?

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