40 is what percent of 921? (What percent of 921 is 40?)

40 is what percent of 921?

The question here is "40 is what percent of 921?" which is the same as "What percent of 921 is 40?" This math word problem is asking "what percent" so we know that the answer should be a percent. Specifically, what percent (x) of 921 equals 40.

The problem is therefore x% of 921 = 40 which can be written as a function:

		x ∗ 921
		100

= 40

And when we solve the function above for x, we get 4.343. The answer to "40 is what percent of 921?" is therefore:

4.343%

How can we know the answer is correct? We know the answer is correct because 4.343 percent of 921 is 40.

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