57 is what percent of 987 - 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 987 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 987, so we can write it down as 100%=987.
4. We know, that x% equals 57 of the output value, so we can write it down as x%=57.
5. Now we have two simple equations:
1) 100%=987
2) x%=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%=987/57
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 57 is what percent of 987

100%/x%=987/57
(100/x)*x=(987/57)*x       - we multiply both sides of the equation by x
100=17.315789473684*x       - we divide both sides of the equation by (17.315789473684) to get x
100/17.315789473684=x
5.7750759878419=x
x=5.7750759878419

now we have:
57 is 5.7750759878419% of 987