Question
A boat can cover 120 km in upstream in 15 hours and 135
km in Downstream in 5 hours. Find the speed of boat in still water.Solution
Upstream speed of the boat = 120/15 = 8 km/hr Downstream speed of the boat = 135/5 = 27 km/hr Speed of boat in still water = (8 + 27)/2 = 17.5 km/hr
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