644 is 5 percent of what number? (5% of what number is 644?)

644 is 5 percent of what number?

"644 is 5 percent of what number?" is a word problem where the answer is a number. Specifically, if you calculate 5 percent of number (x), you will get 644. Thus, you can illustrate the problem "644 is 5 percent of what number (x)" like this:

5% of x = 644

To calculate 5 percent of a number, we multiply the number by 5 and then divide by 100. Therefore, we can make the following function:

		5 ∗ x
		100

= 644

To solve for x, we first multiply both sides by 100 and then divide both sides by 5 to get the x = 12880. Therefore, the answer to 644 is 5 percent of what number? is:

12880

If we substitue "what number" in the question "644 is 5 percent of what number?" with 12880, we get this sentence: 644 is 5 percent of 12880. Since this statement is true, we know that our answer is correct.

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