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Arithmetic Aptitude :: Boats and Streams

  1. A person can swim in still water at 4 km/h. If the speed of water 2 km/h, how many hours will the man take to swim back against the current for 6km?
  2. A.
    3
    B.
    4
    C.
    4 (1/2)
    D.
    Insufficient data

  3. A boat goes 100 km downstream in 10 hours, and 75 m upstream in 15 hours. The speed of the stream is?
  4. A.
    7 km/h
    B.
    5 km/h
    C.
    3 km/h
    D.
    2 (1/2) km/h

  5. A man can row his boat with the stream at 6 km/h and against the stream in 4 km/h. The man's rate is?
  6. A.
    1 kmph
    B.
    5 kmph
    C.
    8 kmph
    D.
    3 kmph

  7. A man can swim in still water at 4.5 km/h, but takes twice as long to swim upstream than downstream. The speed of the stream is?
  8. A.
    3
    B.
    7.5
    C.
    2.25
    D.
    1.5

  9. A man can row with a speed of 15 kmph in still water. If the stream flows at 5 kmph, then the speed in downstream is?
  10. A.
    10 kmph
    B.
    5 kmph
    C.
    20 kmph
    D.
    22 kmph

  11. A man can row upstream at 25 kmph and downstream at 35 kmph, and then find the speed of the man in still water?
  12. A.
    60 kmph
    B.
    10 kmph
    C.
    30 kmph
    D.
    5 kmph

  13. A boat can move upstream at 25 kmph and downstream at 35 kmph, then the speed of the current is?
  14. A.
    5 kmph
    B.
    10 kmph
    C.
    30 kmph
    D.
    15 kmph

  15. A man swims downstream 30 km and upstream 18 km taking 3 hours each time, what is the speed of the man in still water?
  16. A.
    2 kmph
    B.
    8 kmph
    C.
    16 kmph
    D.
    4 kmph

  17. A man swims downstream 72 km and upstream 45 km taking 9 hours each time; what is the speed of the current?
  18. A.
    3 kmph
    B.
    1.5 kmph
    C.
    13 kmph
    D.
    6.5 kmph

  19. A man can row 6 kmph in still water. When the river is running at 1.2 kmph, it takes him 1 hour to row to a place and black. How far is the place?
  20. A.
    3.12 km
    B.
    2.88 km
    C.
    3 km
    D.
    2 km