15.99 is what percent of 39.98 - 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 39.98 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 39.98, so we can write it down as 100%=39.98.
4. We know, that x% equals 15.99 of the output value, so we can write it down as x%=15.99.
5. Now we have two simple equations:
1) 100%=39.98
2) x%=15.99
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%=39.98/15.99
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 15.99 is what percent of 39.98

100%/x%=39.98/15.99
(100/x)*x=(39.98/15.99)*x       - we multiply both sides of the equation by x
100=2.5003126954346*x       - we divide both sides of the equation by (2.5003126954346) to get x
100/2.5003126954346=x
39.994997498749=x
x=39.994997498749

now we have:
15.99 is 39.994997498749% of 39.98