39 is what percent of 917 - 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 917 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 917, so we can write it down as 100%=917.
4. We know, that x% equals 39 of the output value, so we can write it down as x%=39.
5. Now we have two simple equations:
1) 100%=917
2) x%=39
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%=917/39
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 39 is what percent of 917

100%/x%=917/39
(100/x)*x=(917/39)*x       - we multiply both sides of the equation by x
100=23.512820512821*x       - we divide both sides of the equation by (23.512820512821) to get x
100/23.512820512821=x
4.2529989094875=x
x=4.2529989094875

now we have:
39 is 4.2529989094875% of 917