3 of twenty one
Percentage Calculator
Using this tool you can find any percentage in three ways. So, we think you reached us looking for answers like: 1) What is 3 percent (%) of twenty-one? 2) 3 is what percent of twenty-one? Or may be: 3 of twenty one?
See the solutions to these problems below.
How to work out percentages - Step by Step
Here are the solutions to the questions stated above:
1) What is 3% of 21?
Always use this formula to find a percentage:
% / 100 = Part / Whole replace the given values:
3 / 100 = Part / 21
Cross multiply:
3 x 21 = 100 x Part, or
63 = 100 x Part
Now, divide by 100 and get the answer:
Part = 63 / 100 = 0.63
2) What is 3 out of 21?
This question is equivalent to: "3 is what percent of 21?" Or What percent 3 is out of 21?
Use again the same percentage formula:
% / 100 = Part / Whole replace the given values:
% / 100 = 3 / 21
Cross multiply:
% x 21 = 3 x 100
Divide by 21 to get the percentage:
% = (3 x 100) / 21 = 14.285714285714%
A shorter way to calculate x out of y
You can easily find 3 is out of 21, in one step, by simply dividing 3 by 21, then multiplying the result by 100. So,
3 is out of 21 = 3/21 x 100 = 14.285714285714%
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