What is 13.39 percent of 21 - step by step solution

Simple and best practice solution for 13.39% of 21. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

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To get the solution, we are looking for, we need to point out what we know.

1. We assume, that the number 21 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 21 is 100%, so we can write it down as 21=100%.
4. We know, that x is 13.39% of the output value, so we can write it down as x=13.39%.
5. Now we have two simple equations:
1) 21=100%
2) x=13.39%
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
21/x=100%/13.39%
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for what is 13.39% of 21

21/x=100/13.39
(21/x)*x=(100/13.39)*x       - we multiply both sides of the equation by x
21=7.4682598954444*x       - we divide both sides of the equation by (7.4682598954444) to get x
21/7.4682598954444=x
2.8119=x
x=2.8119

now we have:
13.39% of 21=2.8119

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