2.15 is what percent of 21.85 - 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 21.85 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 21.85, so we can write it down as 100%=21.85.
4. We know, that x% equals 2.15 of the output value, so we can write it down as x%=2.15.
5. Now we have two simple equations:
1) 100%=21.85
2) x%=2.15
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%=21.85/2.15
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 2.15 is what percent of 21.85

100%/x%=21.85/2.15
(100/x)*x=(21.85/2.15)*x       - we multiply both sides of the equation by x
100=10.162790697674*x       - we divide both sides of the equation by (10.162790697674) to get x
100/10.162790697674=x
9.8398169336384=x
x=9.8398169336384

now we have:
2.15 is 9.8398169336384% of 21.85