127.5 is what percent of 155 - 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 155 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 155, so we can write it down as 100%=155.
4. We know, that x% equals 127.5 of the output value, so we can write it down as x%=127.5.
5. Now we have two simple equations:
1) 100%=155
2) x%=127.5
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%=155/127.5
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 127.5 is what percent of 155

100%/x%=155/127.5
(100/x)*x=(155/127.5)*x       - we multiply both sides of the equation by x
100=1.21568627451*x       - we divide both sides of the equation by (1.21568627451) to get x
100/1.21568627451=x
82.2580645161=x
x=82.2580645161

now we have:
127.5 is 82.2580645161% of 155