315 is 15 percent of what number? (15% of what number is 315?)

315 is 15 percent of what number?

"315 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 315. Thus, you can illustrate the problem "315 is 15 percent of what number (x)" like this:

15% of x = 315

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

= 315

To solve for x, we first multiply both sides by 100 and then divide both sides by 15 to get the x = 2100. Therefore, the answer to 315 is 15 percent of what number? is:

2100

If we substitue "what number" in the question "315 is 15 percent of what number?" with 2100, we get this sentence: 315 is 15 percent of 2100. Since this statement is true, we know that our answer is correct.

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