21 is what percent of 3? (What percent of 3 is 21?)

21 is what percent of 3?

The question here is "21 is what percent of 3?" which is the same as "What percent of 3 is 21?" This math word problem is asking "what percent" so we know that the answer should be a percent. Specifically, what percent (x) of 3 equals 21.

The problem is therefore x% of 3 = 21 which can be written as a function:

		x ∗ 3
		100

= 21

And when we solve the function above for x, we get 700. The answer to "21 is what percent of 3?" is therefore:

700%

How can we know the answer is correct? We know the answer is correct because 700 percent of 3 is 21.

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