Question
A boat takes 2 hours to travel 24 km downstream and 4
hours to travel 16 km upstream. What is the speed of the boat in still water?Solution
Speed downstream = Distance / Time = 24 / 2 = 12 km/h. Speed upstream = Distance / Time = 16 / 4 = 4 km/h. Speed of the boat in still water = (Speed downstream + Speed upstream) / 2Â = (12 + 4) / 2 = 8 km/h. Correct option: a
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