20.5 is what percent of 154.7 - 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 154.7 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 154.7, so we can write it down as 100%=154.7.
4. We know, that x% equals 20.5 of the output value, so we can write it down as x%=20.5.
5. Now we have two simple equations:
1) 100%=154.7
2) x%=20.5
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%=154.7/20.5
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 20.5 is what percent of 154.7

100%/x%=154.7/20.5
(100/x)*x=(154.7/20.5)*x       - we multiply both sides of the equation by x
100=7.5463414634146*x       - we divide both sides of the equation by (7.5463414634146) to get x
100/7.5463414634146=x
13.251454427925=x
x=13.251454427925

now we have:
20.5 is 13.251454427925% of 154.7