# Algebra

A fisherman traveled in a boat from point N upstream. After having traveled 6 km, he stopped rowing and 4 hour 30 min after first leaving N, he was brought back to N by the current. Knowing that the speed of the boat in still water is 90 km/hour, find the speed of the river’s current.

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1. since time = distance/speed,

6/(90-x) + 6/x = 4.5
x ≈ 1.35 km/hr

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posted by Steve

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posted by Sai
3. x=2

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posted by g
4. I have the Same question, and both answers are wrong

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posted by Sarayu
5. Current is 4.5km/h

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posted by j
6. 4.5 is right

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