20.25 is what percent of 396.75 - 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 396.75 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 396.75, so we can write it down as 100%=396.75.
4. We know, that x% equals 20.25 of the output value, so we can write it down as x%=20.25.
5. Now we have two simple equations:
1) 100%=396.75
2) x%=20.25
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%=396.75/20.25
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 20.25 is what percent of 396.75

100%/x%=396.75/20.25
(100/x)*x=(396.75/20.25)*x       - we multiply both sides of the equation by x
100=19.592592592593*x       - we divide both sides of the equation by (19.592592592593) to get x
100/19.592592592593=x
5.1039697542533=x
x=5.1039697542533

now we have:
20.25 is 5.1039697542533% of 396.75