A large ship moving at 14 mph in the river has an investigator cater swimming beside it

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A large ship moving at 14 mph in the river has an investigator cater swimming beside it. Investigator cater sets out to survey 70 miles downstream in the direction that the ship is headed. If the cater's speed is 28 mph, how much time will the cater spend surveying and coming back to the ship?

A. 2 hours 30 minutes
B. 2 hours 45 minutes
C. 3 hours 15 minutes
D. 3 hours 20 minutes
E. 3 hours 40 minutes


D

Newbie | Next Rank: 10 Posts
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Joined: 19 Nov 2021
My guess is D 3 hour 20 min

In 2 hour 30 min ship will travel 35 miles and cater will complete survey of 70 miles.

In additional 50 min ship will complete ~ 11.5 miles down stream and cater will upstream ~23 miles with assumption upstream speed is equivalent to down stream speed.