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

15 is what percent of 15?

The question here is "15 is what percent of 15?" which is the same as "What percent of 15 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 15 equals 15.

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

		x ∗ 15
		100

= 15

And when we solve the function above for x, we get 100. The answer to "15 is what percent of 15?" is therefore:

100%

How can we know the answer is correct? We know the answer is correct because 100 percent of 15 is 15.

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