91 is what percent of 2010 - 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 2010 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 2010, so we can write it down as 100%=2010.
4. We know, that x% equals 91 of the output value, so we can write it down as x%=91.
5. Now we have two simple equations:
1) 100%=2010
2) x%=91
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%=2010/91
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 91 is what percent of 2010

100%/x%=2010/91
(100/x)*x=(2010/91)*x       - we multiply both sides of the equation by x
100=22.087912087912*x       - we divide both sides of the equation by (22.087912087912) to get x
100/22.087912087912=x
4.5273631840796=x
x=4.5273631840796

now we have:
91 is 4.5273631840796% of 2010