Question

How long will it take her to burn off a -calorie smoothie that she had for breakfast?

Answer 1

9 seconds

Step-by-step explanation:

From Jenny's swim graph

• Jenny burned 100 calories in 15 minutes.

To determine how long it will take her to burn off a -calorie smoothie that she had for breakfast, we find the unit rate in Minutes per calorie.

`\begin{gathered} Unit\text{ Rate=}\frac{15\text{ minutes}}{100\text{ Calories}} \\ =0.15\text{ minutes per Calorie} \\ =0.15*60\text{ seconds per Calorie} \\ =9\text{ seconds per Calorie} \end{gathered}`

Therefore, Jenny will burn a-calorie smoothie in 9 seconds.