72 is 40 percent of what number? (40% of what number is 72?)

72 is 40 percent of what number?

"72 is 40 percent of what number?" is a word problem where the answer is a number. Specifically, if you calculate 40 percent of number (x), you will get 72. Thus, you can illustrate the problem "72 is 40 percent of what number (x)" like this:

40% of x = 72

To calculate 40 percent of a number, we multiply the number by 40 and then divide by 100. Therefore, we can make the following function:

		40 ∗ x
		100

= 72

To solve for x, we first multiply both sides by 100 and then divide both sides by 40 to get the x = 180. Therefore, the answer to 72 is 40 percent of what number? is:

180

If we substitue "what number" in the question "72 is 40 percent of what number?" with 180, we get this sentence: 72 is 40 percent of 180. Since this statement is true, we know that our answer is correct.

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