Question

A submarine begins at -125 feet below sea

level. If the submarine travels at 20 feet per
minute, how many minutes will it take the
submarine to rise to the surface and then
descend to -104 feet.

Answer 1

Answer: 11.45 minutes

Explanation:

To go to the surface

20x = 125

x = 6.25 minutes

To descend

20x = 104

x = 5.2 minutes

6.25 + 5.2 = 11.45 minutes in total