Multiple Choice Questions on If a boat goes upstream at a speed of 18 km hr and comes back the same distance at 30 km hr What is ........... for SSC CGL Exam Preparation

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Multiple Choice Questions

If a boat goes upstream at a speed of 18 km hr and comes back the same distance at 30 km hr What is ...........

Quantitative Aptitude (CGL) Boats and Streams
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    If a boat goes upstream at a speed of 18 km/hr and comes back the same distance at 30 km/hr. What is the average speed (in km/hr) for the total journey?

    22.5

    Correct Answer

    24

    Incorrect Answer

    20.5

    Incorrect Answer

    25

    Incorrect Answer
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    Explanation:

    Avg Speed = 2ab/(a + b)
    = 2 x 18 x 30 / (18 + 30)
    = 360/16 = 22.5 kmph 

    By: MIRZA SADDAM HUSSAIN
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