91 is what percent of 672 - 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 672 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 672, so we can write it down as 100%=672.
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%=672
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%=672/91
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 672

100%/x%=672/91
(100/x)*x=(672/91)*x       - we multiply both sides of the equation by x
100=7.3846153846154*x       - we divide both sides of the equation by (7.3846153846154) to get x
100/7.3846153846154=x
13.541666666667=x
x=13.541666666667

now we have:
91 is 13.541666666667% of 672