If 1/2 grain equals 30 mg, approximately how many milligrams is 1 grain?

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Multiple Choice

If 1/2 grain equals 30 mg, approximately how many milligrams is 1 grain?

Explanation:
Understanding this hinges on a simple proportional relationship between grains and milligrams. If half a grain corresponds to 30 mg, the full grain must be twice that amount because the relationship is linear. So 1 grain equals 2 × 30 mg, which is 60 mg. Therefore, one grain is about 60 mg.

Understanding this hinges on a simple proportional relationship between grains and milligrams. If half a grain corresponds to 30 mg, the full grain must be twice that amount because the relationship is linear. So 1 grain equals 2 × 30 mg, which is 60 mg. Therefore, one grain is about 60 mg.

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