86.7 is what percent of 90 - 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 90 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 90, so we can write it down as 100%=90.
4. We know, that x% equals 86.7 of the output value, so we can write it down as x%=86.7.
5. Now we have two simple equations:
1) 100%=90
2) x%=86.7
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%=90/86.7
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 86.7 is what percent of 90

100%/x%=90/86.7
(100/x)*x=(90/86.7)*x       - we multiply both sides of the equation by x
100=1.038062283737*x       - we divide both sides of the equation by (1.038062283737) to get x
100/1.038062283737=x
96.333333333333=x
x=96.333333333333

now we have:
86.7 is 96.333333333333% of 90