28.57 is what percent of 139.54 - 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 139.54 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 139.54, so we can write it down as 100%=139.54.
4. We know, that x% equals 28.57 of the output value, so we can write it down as x%=28.57.
5. Now we have two simple equations:
1) 100%=139.54
2) x%=28.57
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%=139.54/28.57
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 28.57 is what percent of 139.54

100%/x%=139.54/28.57
(100/x)*x=(139.54/28.57)*x       - we multiply both sides of the equation by x
100=4.8841442072104*x       - we divide both sides of the equation by (4.8841442072104) to get x
100/4.8841442072104=x
20.474415938082=x
x=20.474415938082

now we have:
28.57 is 20.474415938082% of 139.54