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21% of 400 = 84
To solve this problem, you can either set up an equation or think it through and save some paper and time.
1. Setup
21 84
--- = ---
100 x
2. Remove denominators (by multiplying both sides by each)
21*x = 100*84
or 21x = 8400
3. Solve for x by dividing each side by 21
x = 8400/21
x = 400
The way I quickly thought through the answer was to consider what 21% means: 21/100. So, the ratio between 21 and 100 needs to be applied to 84. I did this:
100/21 = 4.76
4.76 * 84 = 400
If that's more than you were looking for, sorry, but the answer is 400.
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What is 21 of 25 as a percent?
84%. You get this by dividing 21 by 24 and you get .84 which is 84/100ths equaling 84%.
What is 84 percent equal as a fraction?
84% = 21/25
What is twenty-five percent of eighty-four?
25% of 84 = 25% * 84 = 0.25 * 84 = 21
What is 0.5 percent of 84?
Finding 0.5 percent of a number is the same as multiplying a number by 0.005. In this instance, 84 x 0.005 = 0.42. Expressed as a vulgar fraction in its simplest form, this is equal to 21/50, or twenty-one fiftieths.
What is 112 percent of what number is 84?
84/112% = 75
