Answer:
The rate of descent is 4 ft/min.
He will descent 24 ft in 6 min.
Step-by-step explanation:
Consider the provided information.
He starts at sea level and then descends 10 feet in 2 1/2 minutes.
First convert the mixed fraction as shown:
[tex]2\frac{1}{2}=\frac{5}{2} =2.5[/tex]
Therefore the rate of descent is:
The rate of descent = [tex]\frac{10}{2.5}=4[/tex]
Hence, the rate of descent is 4 ft/min
Now find In 6 minutes, how much he will descent:
[tex]4\times 6=24[/tex]
Hence, he will descent 24 ft in 6 min.
