A professional rower can paddle 320 miles upstream in 10 hours and downstream 320 miles in 5 hours. How fast is the current? (don't forget your units)

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asked Apr 1, 2019 205k views

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A professional rower can paddle 320 miles upstream in 10 hours and downstream 320 miles in 5 hours. How fast is the current? (don't forget your units)

Mathematics
high-school

WangYudong asked

by WangYudong

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speed upstream = 320/10 = 32 mph
speed downstream = 320/5 = 64 mph

So spedd of the current is 64 - 32 = 32 mph

Ray Yun answered Apr 6, 2019

by Ray Yun

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