Thursday 2 March 2017

Question of the day 3-3-2017

A man takes twice as long to row a distance against the stream as to row the same distance in favor of the stream. The ratio of the speed of the boat (in still water) and the stream is:


A)2:1
B)4:1
C)5:1
D)3:1
E)None.
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1 comment:

  1. Bhaskar Reddy13 March 2017 at 10:16

    Answer: Option D
    Explanation:
    Let man's rate upstream be x kmph.
    Then, his rate downstream = 2x kmph.
    (Speed in still water) : (Speed of stream) = 2x + x : 2x - x
    2 2
    = 3x : x
    2 2
    = 3 : 1.

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