Question

Describe a strategy for determining the input when you know the percent change and output.Use this example if it helps you to explain your thinking

Answer 1

Let I represent the Input and O, the output.

The strategy for determining the imput, I, is to mulitplying the Output, O by 100 and then dividing the result by the difference between 100 and the given percentage.

Mathematically, the input , I, is:

$I=\frac{100O}{100-P}$