12.9 is what percent of 14.9 - 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 14.9 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 100% equals 14.9, so we can write it down as 100%=14.9.
4. We know, that x% equals 12.9 of the output value, so we can write it down as x%=12.9.
5. Now we have two simple equations:
1) 100%=14.9
2) x%=12.9
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:
100%/x%=14.9/12.9
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 12.9 is what percent of 14.9

100%/x%=14.9/12.9
(100/x)*x=(14.9/12.9)*x       - we multiply both sides of the equation by x
100=1.1550387596899*x       - we divide both sides of the equation by (1.1550387596899) to get x
100/1.1550387596899=x
86.577181208054=x
x=86.577181208054

now we have:
12.9 is 86.577181208054% of 14.9