What is 2.5 percent of 399000 - 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 399000 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 399000 is 100%, so we can write it down as 399000=100%.
4. We know, that x is 2.5% of the output value, so we can write it down as x=2.5%.
5. Now we have two simple equations:
1) 399000=100%
2) x=2.5%
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:
399000/x=100%/2.5%
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for what is 2.5% of 399000

399000/x=100/2.5
(399000/x)*x=(100/2.5)*x       - we multiply both sides of the equation by x
399000=40*x       - we divide both sides of the equation by (40) to get x
399000/40=x
9975=x
x=9975

now we have:
2.5% of 399000=9975