What is 20.009 percent of 80.009 - 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 80.009 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 80.009 is 100%, so we can write it down as 80.009=100%.
4. We know, that x is 20.009% of the output value, so we can write it down as x=20.009%.
5. Now we have two simple equations:
1) 80.009=100%
2) x=20.009%
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:
80.009/x=100%/20.009%
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 20.009% of 80.009

80.009/x=100/20.009
(80.009/x)*x=(100/20.009)*x       - we multiply both sides of the equation by x
80.009=4.9977510120446*x       - we divide both sides of the equation by (4.9977510120446) to get x
80.009/4.9977510120446=x
16.00900081=x
x=16.00900081

now we have:
20.009% of 80.009=16.00900081