6.38 is what percent of 220 - 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 220 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 220, so we can write it down as 100%=220.
4. We know, that x% equals 6.38 of the output value, so we can write it down as x%=6.38.
5. Now we have two simple equations:
1) 100%=220
2) x%=6.38
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%=220/6.38
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 6.38 is what percent of 220

100%/x%=220/6.38
(100/x)*x=(220/6.38)*x       - we multiply both sides of the equation by x
100=34.48275862069*x       - we divide both sides of the equation by (34.48275862069) to get x
100/34.48275862069=x
2.9=x
x=2.9

now we have:
6.38 is 2.9% of 220