15.8 is what percent of 40000 - 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 40000 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 40000, so we can write it down as 100%=40000.
4. We know, that x% equals 15.8 of the output value, so we can write it down as x%=15.8.
5. Now we have two simple equations:
1) 100%=40000
2) x%=15.8
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%=40000/15.8
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 15.8 is what percent of 40000

100%/x%=40000/15.8
(100/x)*x=(40000/15.8)*x       - we multiply both sides of the equation by x
100=2531.6455696203*x       - we divide both sides of the equation by (2531.6455696203) to get x
100/2531.6455696203=x
0.0395=x
x=0.0395

now we have:
15.8 is 0.0395% of 40000