2640 is what percent of 7 - 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 7 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 7, so we can write it down as 100%=7.
4. We know, that x% equals 2640 of the output value, so we can write it down as x%=2640.
5. Now we have two simple equations:
1) 100%=7
2) x%=2640
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%=7/2640
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 2640 is what percent of 7

100%/x%=7/2640
(100/x)*x=(7/2640)*x       - we multiply both sides of the equation by x
100=0.0026515151515152*x       - we divide both sides of the equation by (0.0026515151515152) to get x
100/0.0026515151515152=x
37714.285714286=x
x=37714.285714286

now we have:
2640 is 37714.285714286% of 7