To get the solution, we are looking for, we need to point out what we know.
1. We assume, that the number 180 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 180 is 100%, so we can write it down as 180=100%. 4. We know, that x is 30% of the output value, so we can write it down as x=30%. 5. Now we have two simple equations: 1) 180=100% 2) x=30% 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: 180/x=100%/30% 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 30% of 180
180/x=100/30 (180/x)*x=(100/30)*x - we multiply both sides of the equation by x 180=3.33333333333*x - we divide both sides of the equation by (3.33333333333) to get x 180/3.33333333333=x 54=x x=54
