Question
If the sum of upstream and downstream speed is 28 km/hr
and the speed of the current is 6 km/hr. Then find time taken to cover 50 km in downward?Solution
Let the speed of boat in still water be x km/hr. According to the question, => x + 6 + x − 6 = 28 => x = 14 Downstream speed = 6 + 14 = 20 km/hr Required time = 50/20 = 2.5 hrs
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