What is 11.5 percent of 129.99 - 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 129.99 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 129.99 is 100%, so we can write it down as 129.99=100%.
4. We know, that x is 11.5% of the output value, so we can write it down as x=11.5%.
5. Now we have two simple equations:
1) 129.99=100%
2) x=11.5%
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:
129.99/x=100%/11.5%
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 11.5% of 129.99

129.99/x=100/11.5
(129.99/x)*x=(100/11.5)*x       - we multiply both sides of the equation by x
129.99=8.695652173913*x       - we divide both sides of the equation by (8.695652173913) to get x
129.99/8.695652173913=x
14.94885=x
x=14.94885

now we have:
11.5% of 129.99=14.94885