8.16 is what percent of 129.6 - 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 129.6 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 129.6, so we can write it down as 100%=129.6.
4. We know, that x% equals 8.16 of the output value, so we can write it down as x%=8.16.
5. Now we have two simple equations:
1) 100%=129.6
2) x%=8.16
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%=129.6/8.16
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 8.16 is what percent of 129.6

100%/x%=129.6/8.16
(100/x)*x=(129.6/8.16)*x       - we multiply both sides of the equation by x
100=15.882352941176*x       - we divide both sides of the equation by (15.882352941176) to get x
100/15.882352941176=x
6.2962962962963=x
x=6.2962962962963

now we have:
8.16 is 6.2962962962963% of 129.6