28 is what percent of 915 - 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 915 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 915, so we can write it down as 100%=915.
4. We know, that x% equals 28 of the output value, so we can write it down as x%=28.
5. Now we have two simple equations:
1) 100%=915
2) x%=28
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%=915/28
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 28 is what percent of 915

100%/x%=915/28
(100/x)*x=(915/28)*x       - we multiply both sides of the equation by x
100=32.678571428571*x       - we divide both sides of the equation by (32.678571428571) to get x
100/32.678571428571=x
3.0601092896175=x
x=3.0601092896175

now we have:
28 is 3.0601092896175% of 915