20 is what percent of 1386 - 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 1386 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 1386, so we can write it down as 100%=1386.
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%=1386
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%=1386/20
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 1386

100%/x%=1386/20
(100/x)*x=(1386/20)*x       - we multiply both sides of the equation by x
100=69.3*x       - we divide both sides of the equation by (69.3) to get x
100/69.3=x
1.4430014430014=x
x=1.4430014430014

now we have:
20 is 1.4430014430014% of 1386