15 is what percent of 685? (What percent of 685 is 15?)

15 is what percent of 685?

The question here is "15 is what percent of 685?" which is the same as "What percent of 685 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 685 equals 15.

The problem is therefore x% of 685 = 15 which can be written as a function:

		x ∗ 685
		100

= 15

And when we solve the function above for x, we get 2.19. The answer to "15 is what percent of 685?" is therefore:

2.19%

How can we know the answer is correct? We know the answer is correct because 2.19 percent of 685 is 15.

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