Multiple Choice Questions

A boat covers 36 km upstream in 2 hours and 66 km downstream in 3 hours What is the speed of the boa...........

Quantitative Aptitude(IBPS RRB CL) Boats and Streams

A boat covers 36 km upstream in 2 hours and 66 km downstream in 3 hours. What is the speed of the boat in still water?

18 km/hr

19 km/hr

20 km/hr

21 km/hr

None of these

speed of boat in upstream = 36 / 2 = 18 kmph
speed of boat in downstream = 66 / 3 = 22 kmph
speed of boat in still water = (18 + 22) / 2 = 20kmph

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