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Problem-Solving and Data Analysis / Percentages Difficulty: Easy

There are $320$ marbles in a container. Of these marbles, $10 percent sign$ are red. How many marbles in the container are red?

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Explanation

Choice A is correct. It's given that $10 percent sign$ of the $320$ marbles in a container are red. Therefore, the number of red marbles can be calculated by multiplying the number of marbles in the container by $StartFraction 10 Over 100 EndFraction$ , which gives $320 left parenthesis StartFraction 10 Over 100 EndFraction right parenthesis$ , or $32$ .

Choice B is incorrect. This is the number of marbles in the container that aren't red.

Choice C is incorrect. This is the total number of marbles in the container.

Choice D is incorrect and may result from conceptual or calculation errors.