Question

A skydiver falls 144 feet at 3 seconds. What is the unit rate?

Answer 1

48 feet per second

Explanation:

Write as `144/3` but for unit rate we need `?/1`

So we need to change the 3 into 1. We can do this by dividing it by 3. Using the rule: "what you do to the bottom you also do to the top" (this does not work for add or subtract).

Divide the top and bottom by 3

`144/3" "->" "(144-:3)/(3-:3) " "->" "48/1`

So feet per second

`" "->" "("feet")/("seconds")" "->" "48" feet per second"`