20 is what percent of 472 - 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 472 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 472, so we can write it down as 100%=472.
4. We know, that x% equals 20 of the output value, so we can write it down as x%=20.
5. Now we have two simple equations:
1) 100%=472
2) x%=20
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%=472/20
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 20 is what percent of 472

100%/x%=472/20
(100/x)*x=(472/20)*x       - we multiply both sides of the equation by x
100=23.6*x       - we divide both sides of the equation by (23.6) to get x
100/23.6=x
4.2372881355932=x
x=4.2372881355932

now we have:
20 is 4.2372881355932% of 472