33 is what percent of 639 - 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 639 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 639, so we can write it down as 100%=639.
4. We know, that x% equals 33 of the output value, so we can write it down as x%=33.
5. Now we have two simple equations:
1) 100%=639
2) x%=33
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%=639/33
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 33 is what percent of 639

100%/x%=639/33
(100/x)*x=(639/33)*x       - we multiply both sides of the equation by x
100=19.363636363636*x       - we divide both sides of the equation by (19.363636363636) to get x
100/19.363636363636=x
5.1643192488263=x
x=5.1643192488263

now we have:
33 is 5.1643192488263% of 639