To get the solution, we are looking for, we need to point out what we know.
1. We assume, that the number 42.5 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 42.5 is 100%, so we can write it down as 42.5=100%. 4. We know, that x is 76.8% of the output value, so we can write it down as x=76.8%. 5. Now we have two simple equations: 1) 42.5=100% 2) x=76.8% 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: 42.5/x=100%/76.8% 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 76.8% of 42.5
42.5/x=100/76.8 (42.5/x)*x=(100/76.8)*x - we multiply both sides of the equation by x 42.5=1.30208333333*x - we divide both sides of the equation by (1.30208333333) to get x 42.5/1.30208333333=x 32.64=x x=32.64
