What is 25.5 percent of 20.5 - 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 20.5 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 20.5 is 100%, so we can write it down as 20.5=100%.
4. We know, that x is 25.5% of the output value, so we can write it down as x=25.5%.
5. Now we have two simple equations:
1) 20.5=100%
2) x=25.5%
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:
20.5/x=100%/25.5%
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for what is 25.5% of 20.5

20.5/x=100/25.5
(20.5/x)*x=(100/25.5)*x       - we multiply both sides of the equation by x
20.5=3.921568627451*x       - we divide both sides of the equation by (3.921568627451) to get x
20.5/3.921568627451=x
5.2275=x
x=5.2275

now we have:
25.5% of 20.5=5.2275