12.75 is what percent of 21.42 - 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 21.42 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 21.42, so we can write it down as 100%=21.42.
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%=21.42
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%=21.42/12.75
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 21.42

100%/x%=21.42/12.75
(100/x)*x=(21.42/12.75)*x       - we multiply both sides of the equation by x
100=1.68*x       - we divide both sides of the equation by (1.68) to get x
100/1.68=x
59.52380952381=x
x=59.52380952381

now we have:
12.75 is 59.52380952381% of 21.42