Question
A boat can cover 180 km in downstream in 9 hours and 110
km in upstream in 11 hours. Find the speed of boat in still water.Solution
Downstream speed of the boat = 180/9 = 20 km/hr Upstream speed of the boat = 110/11 = 10 km/hr Speed of boat in still water = (20 + 10)/2 = 15 km/hr
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