2.5 is what percent of 650000000 - 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 650000000 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 650000000, so we can write it down as 100%=650000000.
4. We know, that x% equals 2.5 of the output value, so we can write it down as x%=2.5.
5. Now we have two simple equations:
1) 100%=650000000
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:
100%/x%=650000000/2.5
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 2.5 is what percent of 650000000

100%/x%=650000000/2.5
(100/x)*x=(650000000/2.5)*x       - we multiply both sides of the equation by x
100=260000000*x       - we divide both sides of the equation by (260000000) to get x
100/260000000=x
3.8461538461538E-7=x
x=3.8461538461538E-7

now we have:
2.5 is 3.8461538461538E-7% of 650000000