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Active ingredient of a pill comprises 45% of the pill mass. If a pill contains 325 mg of active ingredient,

what the total mass of the pill?

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Answer:

Explanation:

The idea here is to be able to write and then solve the equation needed for this. In words, this is what you are looking to solve: "The active ingredinet is 45% of the mass of the pill". Putting those words into an equation:

active ingredient = .45 (mass of pill). Since our active ingredient is 35 mg:

325 = .45m and divide by .45:

m = 722.2 mg

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