81.25 is what percent of 215.5 - 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 215.5 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 215.5, so we can write it down as 100%=215.5.
4. We know, that x% equals 81.25 of the output value, so we can write it down as x%=81.25.
5. Now we have two simple equations:
1) 100%=215.5
2) x%=81.25
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%=215.5/81.25
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 81.25 is what percent of 215.5

100%/x%=215.5/81.25
(100/x)*x=(215.5/81.25)*x       - we multiply both sides of the equation by x
100=2.6523076923077*x       - we divide both sides of the equation by (2.6523076923077) to get x
100/2.6523076923077=x
37.703016241299=x
x=37.703016241299

now we have:
81.25 is 37.703016241299% of 215.5