7.83 is what percent of 81 - 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 81 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 81, so we can write it down as 100%=81.
4. We know, that x% equals 7.83 of the output value, so we can write it down as x%=7.83.
5. Now we have two simple equations:
1) 100%=81
2) x%=7.83
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%=81/7.83
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 7.83 is what percent of 81

100%/x%=81/7.83
(100/x)*x=(81/7.83)*x       - we multiply both sides of the equation by x
100=10.344827586207*x       - we divide both sides of the equation by (10.344827586207) to get x
100/10.344827586207=x
9.6666666666667=x
x=9.6666666666667

now we have:
7.83 is 9.6666666666667% of 81