Answer:
120% of 50 = 60
Explanation:
To get the solution, we are looking for, we need to point out what we know. 
 
1. We assume, that the number 50 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 50 is 100%, so we can write it down as 50=100%. 
4. We know, that x is 120% of the output value, so we can write it down as x=120%. 
5. Now we have two simple equations: 
1) 50=100% 
2) x=120% 
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: 
50/x=100%/120% 
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 120% of 50 
 
50/x=100/120 
(50/x)*x=(100/120)*x - we multiply both sides of the equation by x 
50=0.833333333333*x - we divide both sides of the equation by (0.833333333333) to get x 
50/0.833333333333=x 
60=x 
x=60 
 
now we have: 
120% of 50=60