20 is what percent of 3104 - 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 3104 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 3104, so we can write it down as 100%=3104.
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%=3104
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%=3104/20
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 3104

100%/x%=3104/20
(100/x)*x=(3104/20)*x       - we multiply both sides of the equation by x
100=155.2*x       - we divide both sides of the equation by (155.2) to get x
100/155.2=x
0.64432989690722=x
x=0.64432989690722

now we have:
20 is 0.64432989690722% of 3104