15 is what percent of 42? (What percent of 42 is 15?)

15 is what percent of 42?

The question here is "15 is what percent of 42?" which is the same as "What percent of 42 is 15?" This math word problem is asking "what percent" so we know that the answer should be a percent. Specifically, what percent (x) of 42 equals 15.

The problem is therefore x% of 42 = 15 which can be written as a function:

		x ∗ 42
		100

= 15

And when we solve the function above for x, we get 35.714. The answer to "15 is what percent of 42?" is therefore:

35.714%

How can we know the answer is correct? We know the answer is correct because 35.714 percent of 42 is 15.

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