45 is 15 percent of what number? (15% of what number is 45?)

45 is 15 percent of what number?

"45 is 15 percent of what number?" is a word problem where the answer is a number. Specifically, if you calculate 15 percent of number (x), you will get 45. Thus, you can illustrate the problem "45 is 15 percent of what number (x)" like this:

15% of x = 45

To calculate 15 percent of a number, we multiply the number by 15 and then divide by 100. Therefore, we can make the following function:

		15 ∗ x
		100

= 45

To solve for x, we first multiply both sides by 100 and then divide both sides by 15 to get the x = 300. Therefore, the answer to 45 is 15 percent of what number? is:

300

If we substitue "what number" in the question "45 is 15 percent of what number?" with 300, we get this sentence: 45 is 15 percent of 300. Since this statement is true, we know that our answer is correct.

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