9.78 is what percent of 25 - 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 25 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 25, so we can write it down as 100%=25.
4. We know, that x% equals 9.78 of the output value, so we can write it down as x%=9.78.
5. Now we have two simple equations:
1) 100%=25
2) x%=9.78
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%=25/9.78
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 9.78 is what percent of 25

100%/x%=25/9.78
(100/x)*x=(25/9.78)*x       - we multiply both sides of the equation by x
100=2.5562372188139*x       - we divide both sides of the equation by (2.5562372188139) to get x
100/2.5562372188139=x
39.12=x
x=39.12

now we have:
9.78 is 39.12% of 25