729 is 20 percent of what number? (20% of what number is 729?)

729 is 20 percent of what number?

"729 is 20 percent of what number?" is a word problem where the answer is a number. Specifically, if you calculate 20 percent of number (x), you will get 729. Thus, you can illustrate the problem "729 is 20 percent of what number (x)" like this:

20% of x = 729

To calculate 20 percent of a number, we multiply the number by 20 and then divide by 100. Therefore, we can make the following function:

		20 ∗ x
		100

= 729

To solve for x, we first multiply both sides by 100 and then divide both sides by 20 to get the x = 3645. Therefore, the answer to 729 is 20 percent of what number? is:

3645

If we substitue "what number" in the question "729 is 20 percent of what number?" with 3645, we get this sentence: 729 is 20 percent of 3645. Since this statement is true, we know that our answer is correct.

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