Question
A boat takes 3 hours to travel 30 km downstream and 5
hours to travel the same distance upstream. What is the speed of the boat in still water?Solution
Downstream speed = 30 / 3 = 10 km/h Upstream speed = 30 / 5 = 6 km/h Speed in still water = (10 + 6) / 2 = 8 km/h
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