20 is what percent of 238 - 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 238 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 238, so we can write it down as 100%=238.
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%=238
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%=238/20
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 238

100%/x%=238/20
(100/x)*x=(238/20)*x       - we multiply both sides of the equation by x
100=11.9*x       - we divide both sides of the equation by (11.9) to get x
100/11.9=x
8.40336134454=x
x=8.40336134454

now we have:
20 is 8.40336134454% of 238