Question
A boat travels 240 km upstream in 6 hours and 360 km
downstream in 6 hours. How long will it take to travel 300 km in still water?Solution
Upstream speed = 240 / 6 = 40 km/h Downstream speed = 360 / 6 = 60 km/h Speed in still water = (40 + 60) / 2 = 50 km/h Required time = 300 / 50 = 6 hours
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