20 is what percent of 563 - step by step solution

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

1. We assume, that the number 563 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 100% equals 563, so we can write it down as 100%=563.
4. We know, that x% equals 20 of the output value, so we can write it down as x%=20.
5. Now we have two simple equations:
1) 100%=563
2) x%=20
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:
100%/x%=563/20
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 20 is what percent of 563

100%/x%=563/20
(100/x)*x=(563/20)*x       - we multiply both sides of the equation by x
100=28.15*x       - we divide both sides of the equation by (28.15) to get x
100/28.15=x
3.5523978685613=x
x=3.5523978685613

now we have:
20 is 3.5523978685613% of 563