A boat can travel with a speed of 13 k/h in still water. If the speed of stream is 4 k/h in the same direction, time taken by boatto go 63 km in opposite direction is
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speed of boat in still water = 13km/h
speed of boat with stream speed = 13+4=17km/h
time taken in 1hour = 1
time taken in 63km/h = 63/14=3.7
so speed = 187 minutes
speed of boat with stream speed = 13+4=17km/h
time taken in 1hour = 1
time taken in 63km/h = 63/14=3.7
so speed = 187 minutes
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