A boat moves with a speed of 5 km/h relative to water in a river flowing with a speed of 3 km/h and having a width of 1 km. The minimum time taken around a round trip is
Text Solution
Verified by ExpertsThe correct answer is:
D
For the round trip he should cross perpendicular to the river 
Time for trip to that side
To come back, again he take 0.25 hr to cross the river.
Total time is 30 min, he goes to the other bank and come back at the same point.
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