30.87 is what percent of 822 - 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 822 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 822, so we can write it down as 100%=822.
4. We know, that x% equals 30.87 of the output value, so we can write it down as x%=30.87.
5. Now we have two simple equations:
1) 100%=822
2) x%=30.87
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%=822/30.87
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 30.87 is what percent of 822

100%/x%=822/30.87
(100/x)*x=(822/30.87)*x       - we multiply both sides of the equation by x
100=26.627793974733*x       - we divide both sides of the equation by (26.627793974733) to get x
100/26.627793974733=x
3.7554744525547=x
x=3.7554744525547

now we have:
30.87 is 3.7554744525547% of 822