Work Step by Step
To solve this, you must set up an equation. First, you have to convert 120% to a decimal, so you have to divide 120 by 100. You get 1.20 because you will move the decimal 2 places to the left. Now, you set up the equation, which is 90=n x 1.20. So all you have to do is divide 90 by 1.20. You will get 75, which is your answer.