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

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Tony B Share
Nov 18, 2017

48 feet per second

#### Explanation:

Write as $\frac{144}{3}$ 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

$\frac{144}{3} \text{ "->" "(144-:3)/(3-:3) " "->" } \frac{48}{1}$

So feet per second

$\text{ "->" "("feet")/("seconds")" "->" "48" feet per second}$

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