SOLUTION: a boatman can row his boat at a speed of 8km per hour in still water.if a river flows at a speed of 2km per hour,then how long will the boatman take to row his boat 1200metres agai

Question 811807: a boatman can row his boat at a speed of 8km per hour in still water.if a river flows at a speed of 2km per hour,then how long will the boatman take to row his boat 1200metres against the direction of the current.
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
s = 8 - 2 = 6 kph
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s = d/t
t = d/s
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t = 1.2 km / 6 kph = 0.2 hours * 60 min/hour = 12 minutes
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