Question

The speed of a boat in still water is 8kmph and the speed of stream is 6kmph. The boat covers a round trip journey in 12 hours. Find the time taken by it to complete the upstream journey

Answer 1

speed of the boat in upstream = 8 - 6 =2km/h
distance of journey = s × t
distance = 12 × 8 =96 km
time taken in upstream = dist. /speed
time = (96/2)hour
time = 48 hours

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Answer 2

b=8km/h t=12h. distance=12×8=96

s=6km/h t=96/6=16h