324.99 is what percent of 399.99 - 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 399.99 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 399.99, so we can write it down as 100%=399.99.
4. We know, that x% equals 324.99 of the output value, so we can write it down as x%=324.99.
5. Now we have two simple equations:
1) 100%=399.99
2) x%=324.99
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%=399.99/324.99
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 324.99 is what percent of 399.99

100%/x%=399.99/324.99
(100/x)*x=(399.99/324.99)*x       - we multiply both sides of the equation by x
100=1.2307763315794*x       - we divide both sides of the equation by (1.2307763315794) to get x
100/1.2307763315794=x
81.249531238281=x
x=81.249531238281

now we have:
324.99 is 81.249531238281% of 399.99