138 is 10 percent of what number? (10% of what number is 138?)

138 is 10 percent of what number?

"138 is 10 percent of what number?" is a word problem where the answer is a number. Specifically, if you calculate 10 percent of number (x), you will get 138. Thus, you can illustrate the problem "138 is 10 percent of what number (x)" like this:

10% of x = 138

To calculate 10 percent of a number, we multiply the number by 10 and then divide by 100. Therefore, we can make the following function:

		10 ∗ x
		100

= 138

To solve for x, we first multiply both sides by 100 and then divide both sides by 10 to get the x = 1380. Therefore, the answer to 138 is 10 percent of what number? is:

1380

If we substitue "what number" in the question "138 is 10 percent of what number?" with 1380, we get this sentence: 138 is 10 percent of 1380. Since this statement is true, we know that our answer is correct.

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