"21 is 12 percent of what number?" is a word problem where the answer is a number. Specifically, if you calculate 12 percent of number (x), you will get 21. Thus, you can illustrate the problem "21 is 12 percent of what number (x)" like this:
12% of x = 21
To calculate 12 percent of a number, we multiply the number by 12 and then divide by 100. Therefore, we can make the following function:
|
| = 21 |
To solve for x, we first multiply both sides by 100 and then divide both sides by 12 to get the x = 175. Therefore, the answer to 21 is 12 percent of what number? is:
175
If we substitue "what number" in the question "21 is 12 percent of what number?" with 175, we get this sentence: 21 is 12 percent of 175. Since this statement is true, we know that our answer is correct.
Percent Of What Number
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