3.96 is what percent of 21.96 - 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 21.96 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 21.96, so we can write it down as 100%=21.96.
4. We know, that x% equals 3.96 of the output value, so we can write it down as x%=3.96.
5. Now we have two simple equations:
1) 100%=21.96
2) x%=3.96
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%=21.96/3.96
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 3.96 is what percent of 21.96

100%/x%=21.96/3.96
(100/x)*x=(21.96/3.96)*x       - we multiply both sides of the equation by x
100=5.5454545454545*x       - we divide both sides of the equation by (5.5454545454545) to get x
100/5.5454545454545=x
18.032786885246=x
x=18.032786885246

now we have:
3.96 is 18.032786885246% of 21.96