Multiple Choice Questions on The different between downstream speed and upstream speed is 2 kmph and the total time taken during ........... for IBPS RRB - Officers Exam Preparation

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Multiple Choice Questions

The different between downstream speed and upstream speed is 2 kmph and the total time taken during ...........

Quantitative Aptitude(IBPS RRB PO) Boats and Streams
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    The different between downstream speed and upstream speed is 2 kmph and the total time taken during upstream and downstream is 2 hours. What is the upstream speed, if the downstream and upstream distance are 2 km each?

    5.2 kmph

    Incorrect Answer

    3.7 kmph

    Incorrect Answer

    2.8 kmph

    Incorrect Answer

    1.4 kmph

    Correct Answer
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    Explanation:

    Option D
    Solution: 
    2/x + 2/(x+2) = 2.
    x2 – 2 = 0
    x = 1.414 kmph

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