20 is what percent of 63.96 - 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 63.96 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 63.96, so we can write it down as 100%=63.96.
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%=63.96
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%=63.96/20
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 63.96

100%/x%=63.96/20
(100/x)*x=(63.96/20)*x       - we multiply both sides of the equation by x
100=3.198*x       - we divide both sides of the equation by (3.198) to get x
100/3.198=x
31.269543464665=x
x=31.269543464665

now we have:
20 is 31.269543464665% of 63.96