What is 9 percent of 387.11 - 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 387.11 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 387.11 is 100%, so we can write it down as 387.11=100%.
4. We know, that x is 9% of the output value, so we can write it down as x=9%.
5. Now we have two simple equations:
1) 387.11=100%
2) x=9%
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:
387.11/x=100%/9%
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 9% of 387.11

387.11/x=100/9
(387.11/x)*x=(100/9)*x       - we multiply both sides of the equation by x
387.11=11.111111111111*x       - we divide both sides of the equation by (11.111111111111) to get x
387.11/11.111111111111=x
34.8399=x
x=34.8399

now we have:
9% of 387.11=34.8399