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Practice Test 26
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SSC CGL Boats and Streams Practice Test 26

15 original SSC CGL boats and streams questions on upstream, downstream, still-water speed, stream speed, and time-distance cases.

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SSC CGL Practice Session

SSC CGL Boats and Streams Practice Test 26

15 original SSC CGL boats and streams questions on upstream, downstream, still-water speed, stream speed, and time-distance cases.

Questions
14
Marking
+2 correct, -0.5 wrong
Format
15-question ad-supported session
Preview all 14 questions in SSC CGL Boats and Streams Practice Test 26 (no login required)
  1. Still Water

    1. Downstream speed is 18 km/h and upstream speed is 10 km/h. Speed of the boat in still water is:

    • A. 12 km/h
    • B. 14 km/h (Correct)
    • C. 16 km/h
    • D. 18 km/h

    Explanation: Still-water speed = (downstream + upstream)/2 = (18 + 10)/2 = 14 km/h.

  2. Stream Speed

    2. Downstream speed is 20 km/h and upstream speed is 12 km/h. Speed of the stream is:

    • A. 3 km/h
    • B. 4 km/h (Correct)
    • C. 5 km/h
    • D. 6 km/h

    Explanation: Stream speed = (downstream - upstream)/2 = (20 - 12)/2 = 4 km/h.

  3. Downstream

    3. A boat's still-water speed is 15 km/h and stream speed is 3 km/h. Time to cover 72 km downstream is:

    • A. 3 h
    • B. 4 h (Correct)
    • C. 5 h
    • D. 6 h

    Explanation: Downstream speed = 15 + 3 = 18 km/h. Time = 72/18 = 4 hours.

  4. Distance

    4. A boat moves downstream at 24 km/h for 2.5 hours. Distance covered is:

    • A. 50 km
    • B. 55 km
    • C. 60 km (Correct)
    • D. 65 km

    Explanation: Distance = speed x time = 24 x 2.5 = 60 km.

  5. Combined Time

    5. A boat covers 30 km downstream in 2 hours and the same distance upstream in 3 hours. Speed of the stream is:

    • A. 2 km/h
    • B. 2.5 km/h (Correct)
    • C. 3 km/h
    • D. 3.5 km/h

    Explanation: Downstream speed = 15 km/h and upstream speed = 10 km/h. Stream speed = (15 - 10)/2 = 2.5 km/h.

  6. Still Water

    6. A boat covers 40 km downstream in 2 hours and 24 km upstream in 2 hours. Speed of the boat in still water is:

    • A. 14 km/h
    • B. 15 km/h
    • C. 16 km/h (Correct)
    • D. 18 km/h

    Explanation: Downstream speed = 20 km/h and upstream speed = 12 km/h. Still-water speed = (20 + 12)/2 = 16 km/h.

  7. Stream Speed

    7. If a boat's speed in still water is 13 km/h and downstream speed is 17 km/h, upstream speed is:

    • A. 7 km/h
    • B. 8 km/h
    • C. 9 km/h (Correct)
    • D. 10 km/h

    Explanation: Stream speed = 17 - 13 = 4 km/h. Upstream speed = 13 - 4 = 9 km/h.

  8. Time

    8. A boat takes 5 hours to go 60 km upstream. If stream speed is 3 km/h, downstream speed is:

    • A. 15 km/h
    • B. 16 km/h
    • C. 18 km/h (Correct)
    • D. 21 km/h

    Explanation: Upstream speed = 60/5 = 12 km/h. Still-water speed = 12 + 3 = 15 km/h. Downstream speed = 15 + 3 = 18 km/h.

  9. Ratio

    9. Downstream and upstream speeds are in the ratio 5:3. If speed of stream is 4 km/h, speed of boat in still water is:

    • A. 14 km/h
    • B. 16 km/h (Correct)
    • C. 18 km/h
    • D. 20 km/h

    Explanation: Let speeds be 5x and 3x. Stream speed = (5x - 3x)/2 = x = 4. Still-water speed = (5x + 3x)/2 = 4x = 16.

  10. Upstream

    10. A boat has downstream speed 21 km/h and stream speed 4 km/h. Its upstream speed is:

    • A. 11 km/h
    • B. 13 km/h (Correct)
    • C. 15 km/h
    • D. 17 km/h

    Explanation: Still-water speed = 21 - 4 = 17 km/h. Upstream speed = 17 - 4 = 13 km/h.

  11. Distance

    11. A boat travels upstream at 8 km/h for 3 hours and downstream at 12 km/h for 2 hours. Total distance covered is:

    • A. 42 km
    • B. 45 km
    • C. 48 km (Correct)
    • D. 50 km

    Explanation: Upstream distance = 8 x 3 = 24 km and downstream distance = 12 x 2 = 24 km. Total = 48 km.

  12. Stream Speed

    12. A man rows 45 km downstream in 3 hours and returns upstream in 5 hours. Speed of stream is:

    • A. 2 km/h
    • B. 3 km/h (Correct)
    • C. 4 km/h
    • D. 5 km/h

    Explanation: Downstream speed = 15 km/h and upstream speed = 9 km/h. Stream speed = (15 - 9)/2 = 3 km/h.

  13. Still Water

    13. A boat's upstream speed is 11 km/h and stream speed is 2 km/h. Speed of boat in still water is:

    • A. 11 km/h
    • B. 13 km/h (Correct)
    • C. 15 km/h
    • D. 17 km/h

    Explanation: Still-water speed = upstream speed + stream speed = 11 + 2 = 13 km/h.

  14. Downstream

    14. A boat covers 84 km downstream in 4 hours. If stream speed is 3 km/h, speed of boat in still water is:

    • A. 15 km/h
    • B. 16 km/h
    • C. 18 km/h (Correct)
    • D. 21 km/h

    Explanation: Downstream speed = 84/4 = 21 km/h. Still-water speed = 21 - 3 = 18 km/h.