Question

A diver is currently -5 feet from the surface of the water and plans to explore a shipwreck that is at -75 from the surface. If she moves at a rate of -8 feet per minute, how many minutes does it take the diver to reach the shipwreck?

Answer 1

8.75 minutes

Explanation:

This is a simple linear relation between two variables, time and depth

We can solve it by simple inspection like this.

If the diver is 5 feet deep and plans to go 75 feet deep, he must move 70 feet deeper.

At a rate of 8 feet/minute, it will take him/her

70/8= 8.75 minutes

It is 8 minutes and 45 seconds