642.5 is what percent of 950 - 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 950 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 950, so we can write it down as 100%=950.
4. We know, that x% equals 642.5 of the output value, so we can write it down as x%=642.5.
5. Now we have two simple equations:
1) 100%=950
2) x%=642.5
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%=950/642.5
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 642.5 is what percent of 950

100%/x%=950/642.5
(100/x)*x=(950/642.5)*x       - we multiply both sides of the equation by x
100=1.4785992217899*x       - we divide both sides of the equation by (1.4785992217899) to get x
100/1.4785992217899=x
67.631578947368=x
x=67.631578947368

now we have:
642.5 is 67.631578947368% of 950