The hiker's average change in elevation per minute is 8.This can be determined by using distance speed formula.
Given that :
A hiker descended 320 feet in 40 minutes.
We have to find,
The hiker's average change in elevation per minute.
According to the question.
We know that average speed is defined as distance divided by time.
Therefore,
[tex]\rm{Speed}=\dfrac{Distance}{Time}[/tex]
Here, value of distance is 320 feet and value of time is 40 minutes.
Now, we have to put the values in given equation and solve it further.
[tex]\begin{aligned}\rm{Speed}&= \dfrac{320}{40}\\&=\bold{8}\end{aligned}[/tex]
Hence, the hiker's average change in elevation per minute is 8.
For more information,please prefer this link:
https://brainly.com/question/15074812
