We assume, that the number 48 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 48, so we can write it down as 100%=48. 4. We know, that x% equals 18 of the output value, so we can write it down as x%=18. 5. Now we have two simple equations: 1) 100%=48 2) x%=18 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%=48/18 6. Now we just have to solve the simple equation, and we will get the solution we are looking for.
7. Solution for 18 is what percent of 48
100%/x%=48/18 (100/x)*x=(48/18)*x - we multiply both sides of the equation by x 100=2.66666666667*x - we divide both sides of the equation by (2.66666666667) to get x 100/2.66666666667=x 37.5=x x=37.5
now we have: <span>18 is 37.5% of 48 </span>minus 100 is 82.5%