13 is 18 percent of what number? (18% of what number is 13?)

13 is 18 percent of what number?

"13 is 18 percent of what number?" is a word problem where the answer is a number. Specifically, if you calculate 18 percent of number (x), you will get 13. Thus, you can illustrate the problem "13 is 18 percent of what number (x)" like this:

18% of x = 13

To calculate 18 percent of a number, we multiply the number by 18 and then divide by 100. Therefore, we can make the following function:

		18 ∗ x
		100

= 13

To solve for x, we first multiply both sides by 100 and then divide both sides by 18 to get the x = 72.22. Therefore, the answer to 13 is 18 percent of what number? is:

72.22

If we substitue "what number" in the question "13 is 18 percent of what number?" with 72.22, we get this sentence: 13 is 18 percent of 72.22. Since this statement is true, we know that our answer is correct.

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