Vimal can row a certain distance downstream in 14 hoursand return the same distance in 21 hours If t...........

Quant (SSC) Boats and Streams

Vimal can row a certain distance downstream in 14 hoursand return the same distance in 21 hours. If the speed of the stream is 6 kmph, Find the speed of Vimal in the still water?

21 kmph

15 kmph

30 kmph

35 kmph

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Explanation:

Speed of Vimal in still water = x
Downstream Speed = (x + 6)
Upstream Speed = (x – 6)
Downstream Distance = Upstream Distance
14(x + 6) = 21(x – 6)
2x + 12 = 3x – 18
x = 30 kmph.

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