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Jan's motorboat travels at a speed of 14 mph in still water. Booth river flows at a speed of 4 mph. How long will it take Jen to travel 16 miles upstream? 16 miles downstream?
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Jan's motorboat travels at a speed of 14 mph in still water. Booth river flows at a speed of 4 mph. How long will it take Jen to travel 16 miles upstream? 16 miles downstream?

User Raceyman
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2 Answers

7 votes
upstream 1hr and 54 minutes and downstream about 57 minutes
User Akos Krivachy
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7.5k points
4 votes
Upstream: 14 - 4 = 10. Miles per hour.
16 miles = 1.6 hours.

Downstream: 14 + 4 = 18.
16 miles = 16/18 = 8/9 or 0.888 of an hour.

User MindWire
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8.0k points
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