What is 0.00125 percent of 20000 - 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 20000 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 20000 is 100%, so we can write it down as 20000=100%.
4. We know, that x is 0.00125% of the output value, so we can write it down as x=0.00125%.
5. Now we have two simple equations:
1) 20000=100%
2) x=0.00125%
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:
20000/x=100%/0.00125%
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 0.00125% of 20000

20000/x=100/0.00125
(20000/x)*x=(100/0.00125)*x       - we multiply both sides of the equation by x
20000=80000*x       - we divide both sides of the equation by (80000) to get x
20000/80000=x
0.25=x
x=0.25

now we have:
0.00125% of 20000=0.25