12 is what percent of 149.5 - 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 149.5 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 149.5, so we can write it down as 100%=149.5.
4. We know, that x% equals 12 of the output value, so we can write it down as x%=12.
5. Now we have two simple equations:
1) 100%=149.5
2) x%=12
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%=149.5/12
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 12 is what percent of 149.5

100%/x%=149.5/12
(100/x)*x=(149.5/12)*x       - we multiply both sides of the equation by x
100=12.458333333333*x       - we divide both sides of the equation by (12.458333333333) to get x
100/12.458333333333=x
8.0267558528428=x
x=8.0267558528428

now we have:
12 is 8.0267558528428% of 149.5