We assume, that the number 12 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 12, so we can write it down as 100%=12. 4. We know, that x% equals 36 of the output value, so we can write it down as x%=36. 5. Now we have two simple equations: 1) 100%=12 2) x%=36 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%=12/36 6. Now we just have to solve the simple equation, and we will get the solution we are looking for.
7. Solution for 36 is what percent of 12
100%/x%=12/36 (100/x)x=(12/36)x - we multiply both sides of the equation by x 100=0.333333333333*x - we divide both sides of the equation by (0.333333333333) to get x 100/0.333333333333=x 300=x x=300
