SOLUTION: A man can swim with a
speed of 4km/h in still water. How long
does he take to cross a river 1km wide if
the river flows steadily at 3km/h and he
makes his strokes normal to the
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speed of 4km/h in still water. How long
does he take to cross a river 1km wide if
the river flows steadily at 3km/h and he
makes his strokes normal to the
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Question 892581: A man can swim with a
speed of 4km/h in still water. How long
does he take to cross a river 1km wide if
the river flows steadily at 3km/h and he
makes his strokes normal to the river
current? How far down the river does he go
when he reaches the other bank? Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! A man can swim with a
speed of 4km/h in still water. How long
does he take to cross a river 1km wide if
the river flows steadily at 3km/h and he
makes his strokes normal to the river
current?
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d = r*t
t = d/r = 1/4 hour
================
How far down the river does he go
when he reaches the other bank?
d = r*t
3 km/hr * 1/4 hr = 3/4 km
