8.6 is what percent of 7 - 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 7 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 7, so we can write it down as 100%=7.
4. We know, that x% equals 8.6 of the output value, so we can write it down as x%=8.6.
5. Now we have two simple equations:
1) 100%=7
2) x%=8.6
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%=7/8.6
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 8.6 is what percent of 7

100%/x%=7/8.6
(100/x)*x=(7/8.6)*x       - we multiply both sides of the equation by x
100=0.813953488372*x       - we divide both sides of the equation by (0.813953488372) to get x
100/0.813953488372=x
122.857142857=x
x=122.857142857

now we have:
8.6 is 122.857142857% of 7