25 is what percent of 642? (What percent of 642 is 25?)

25 is what percent of 642?

The question here is "25 is what percent of 642?" which is the same as "What percent of 642 is 25?" This math word problem is asking "what percent" so we know that the answer should be a percent. Specifically, what percent (x) of 642 equals 25.

The problem is therefore x% of 642 = 25 which can be written as a function:

		x ∗ 642
		100

= 25

And when we solve the function above for x, we get 3.894. The answer to "25 is what percent of 642?" is therefore:

3.894%

How can we know the answer is correct? We know the answer is correct because 3.894 percent of 642 is 25.

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