85 is what percent of 3240 - 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 3240 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 3240, so we can write it down as 100%=3240.
4. We know, that x% equals 85 of the output value, so we can write it down as x%=85.
5. Now we have two simple equations:
1) 100%=3240
2) x%=85
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%=3240/85
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 85 is what percent of 3240

100%/x%=3240/85
(100/x)*x=(3240/85)*x       - we multiply both sides of the equation by x
100=38.117647058824*x       - we divide both sides of the equation by (38.117647058824) to get x
100/38.117647058824=x
2.6234567901235=x
x=2.6234567901235

now we have:
85 is 2.6234567901235% of 3240