856.5 is what percent of 1040 - 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 1040 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 1040, so we can write it down as 100%=1040.
4. We know, that x% equals 856.5 of the output value, so we can write it down as x%=856.5.
5. Now we have two simple equations:
1) 100%=1040
2) x%=856.5
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%=1040/856.5
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 856.5 is what percent of 1040

100%/x%=1040/856.5
(100/x)*x=(1040/856.5)*x       - we multiply both sides of the equation by x
100=1.2142440163456*x       - we divide both sides of the equation by (1.2142440163456) to get x
100/1.2142440163456=x
82.355769230769=x
x=82.355769230769

now we have:
856.5 is 82.355769230769% of 1040