Downstream speed = 12+4=16 km/hr. Upstream speed = 12−4=8 km/hr.
Let D = distance one way. Round trip time: 16D+8D=12.
16D+2D=12⇒163D=12⇒D=64 km.
A motor boat can row at the speed of 12 kilometres per hour in Still water . if the river is flowing at 4 kilometer per hour and it takes 12 hours for a round trip , then the distance between the two places is
Held on 7 Jun 2023 · Verified 13 Jul 2026.
48 km
32 km
64 km
52 km
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