What is 500 percent of 19.9 - 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 19.9 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 19.9 is 100%, so we can write it down as 19.9=100%.
4. We know, that x is 500% of the output value, so we can write it down as x=500%.
5. Now we have two simple equations:
1) 19.9=100%
2) x=500%
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:
19.9/x=100%/500%
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 500% of 19.9

19.9/x=100/500
(19.9/x)*x=(100/500)*x       - we multiply both sides of the equation by x
19.9=0.2*x       - we divide both sides of the equation by (0.2) to get x
19.9/0.2=x
99.5=x
x=99.5

now we have:
500% of 19.9=99.5