What is 402.5 percent of 20 - 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 20 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 20 is 100%, so we can write it down as 20=100%.
4. We know, that x is 402.5% of the output value, so we can write it down as x=402.5%.
5. Now we have two simple equations:
1) 20=100%
2) x=402.5%
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:
20/x=100%/402.5%
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 402.5% of 20

20/x=100/402.5
(20/x)*x=(100/402.5)*x       - we multiply both sides of the equation by x
20=0.24844720496894*x       - we divide both sides of the equation by (0.24844720496894) to get x
20/0.24844720496894=x
80.5=x
x=80.5

now we have:
402.5% of 20=80.5