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Arithmetic Aptitude :: Boats and Streams

  1. A man can row 9 1/3 km/hr in still water and he finds that is thrice as much time to row u p than as to row down the same distance in river. The speed of the current is:
  2. A.
    3 1/3 km/hr
    B.
    3 1/9 km/hr
    C.
    1 ¼ km/hr
    D.
    4 2/3 km/hr

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  3. A boatman goes 2 km against the current of the stream in 1 hour and goes 1 km along the current in 10 minutes. How long will it take to go 5 km in stationary water?
  4. A.
    40 minutes
    B.
    1 hour
    C.
    1 hr 15 min
    D.
    1 hr 30 min

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  5. A man can row three-quarters of a kilometre against the stream in 11 minutes and down the stream in 7 minutes. The speed (in km/hr) of the man in still water is:
  6. A.
    2
    B.
    3
    C.
    4
    D.
    5

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  7. Speed of a boat in standing water is 9 kmph and the speed of the stream is 1.5 kmph. A man rows to a place at a distance of 105 km and comes back to the starting point. The total time taken by him is:
  8. A.
    16 hours
    B.
    18 hours
    C.
    20 hours
    D.
    24 hours

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  9. A man takes twice as long to row a distance against the stream as to row the same distance in favour of the stream. The ratio of the speed of the boat (in still water) and the stream is:
  10. A.
    2 : 1
    B.
    3 : 1
    C.
    3 : 2
    D.
    4 : 3

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  11. If a man rows at the rate of 5 kmph in still water and his rate against the current is 3.5 kmph. then the man's rate along the current is
  12. A.
    4.25 kmph
    B.
    6 kmph
    C.
    6.5 kmph
    D.
    8.5 kmph

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