81 is what percent of 800? (What percent of 800 is 81?)

81 is what percent of 800?

The question here is "81 is what percent of 800?" which is the same as "What percent of 800 is 81?" This math word problem is asking "what percent" so we know that the answer should be a percent. Specifically, what percent (x) of 800 equals 81.

The problem is therefore x% of 800 = 81 which can be written as a function:

		x ∗ 800
		100

= 81

And when we solve the function above for x, we get 10.125. The answer to "81 is what percent of 800?" is therefore:

10.125%

How can we know the answer is correct? We know the answer is correct because 10.125 percent of 800 is 81.

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