12.75 is what percent of 18.5 - 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 18.5 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 18.5, so we can write it down as 100%=18.5.
4. We know, that x% equals 12.75 of the output value, so we can write it down as x%=12.75.
5. Now we have two simple equations:
1) 100%=18.5
2) x%=12.75
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%=18.5/12.75
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 12.75 is what percent of 18.5

100%/x%=18.5/12.75
(100/x)*x=(18.5/12.75)*x       - we multiply both sides of the equation by x
100=1.4509803921569*x       - we divide both sides of the equation by (1.4509803921569) to get x
100/1.4509803921569=x
68.918918918919=x
x=68.918918918919

now we have:
12.75 is 68.918918918919% of 18.5