660 is what percent of 9 - 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 9 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 9, so we can write it down as 100%=9.
4. We know, that x% equals 660 of the output value, so we can write it down as x%=660.
5. Now we have two simple equations:
1) 100%=9
2) x%=660
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%=9/660
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 660 is what percent of 9

100%/x%=9/660
(100/x)*x=(9/660)*x       - we multiply both sides of the equation by x
100=0.013636363636364*x       - we divide both sides of the equation by (0.013636363636364) to get x
100/0.013636363636364=x
7333.3333333333=x
x=7333.3333333333

now we have:
660 is 7333.3333333333% of 9