5.81 is what percent of 6.64 - 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 6.64 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 6.64, so we can write it down as 100%=6.64.
4. We know, that x% equals 5.81 of the output value, so we can write it down as x%=5.81.
5. Now we have two simple equations:
1) 100%=6.64
2) x%=5.81
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%=6.64/5.81
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 5.81 is what percent of 6.64

100%/x%=6.64/5.81
(100/x)*x=(6.64/5.81)*x       - we multiply both sides of the equation by x
100=1.1428571428571*x       - we divide both sides of the equation by (1.1428571428571) to get x
100/1.1428571428571=x
87.5=x
x=87.5

now we have:
5.81 is 87.5% of 6.64