20 is what percent of 1372 - 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 1372 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 1372, so we can write it down as 100%=1372.
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%=1372
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%=1372/20
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 1372

100%/x%=1372/20
(100/x)*x=(1372/20)*x       - we multiply both sides of the equation by x
100=68.6*x       - we divide both sides of the equation by (68.6) to get x
100/68.6=x
1.4577259475219=x
x=1.4577259475219

now we have:
20 is 1.4577259475219% of 1372