Question

A submarine is sailing at 1400 ft below sea level. It starts ascending at a constant rate of 40 ft/min. At what depth will it be after five minutes?

Answer 1

Answer:

Depth after the 5 minutes =1200 ft.

Step-by-step explanation:

The initial depth=1400 ft

Depth decreased in 5 minutes=5×40 ft=200 ft.

Depth after the 5 minutes=(1400–200) ft

=1200 ft.

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Answer 2

Answer:

The initial depth=1400 ft

Depth decreased in 5 minutes=5×40 ft=200 ft.

Depth after the 5 minutes=(1400–200) ft

=1200 ft.