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5. A food contains 30% of a day's supply ofcalcium for a particular person. If that personrequires 1,500 mg of calcium, how muchcalcium does the food contain?

1 Answer

6 votes

Answer:

The food contains 450 mg of Calcium.

Explanation:

This question can be solved using a rule of three.

The person requires 1500 mg of Calcium. The food contains 30%. So


(30)/(100)\ast1500=30\ast(1500)/(100)=30\ast15=450

The food contains 450 mg of Calcium.

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