Multiple Choice Questions on A train travelled from Delhi to Agra and back in a certain time at the rate of 40 kmph But if the tr........... for Combined Bank PO and Clerical Exams Preparation

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Multiple Choice Questions

A train travelled from Delhi to Agra and back in a certain time at the rate of 40 kmph But if the tr...........

Quantitative Aptitude(Banking) Problems on trains
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    A train travelled from Delhi to Agra and back in a certain time at the rate of 40 kmph. But if the train had travelled from Delhi to Agra at a rate of 80kmph and back to Delhi at a rate of 40kmph. It would takes 2h less. Find the distance between Delhi and  Agra ?

    460km

    Incorrect Answer

    465km

    Incorrect Answer

    160km

    Correct Answer

    470km

    Incorrect Answer
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    Explanation:

    Avg speed = (2*40*80)/120 = 160/3
    (d/40) – (3d/160) = 2
    (4d-3d)/160 = 2
    d/160 = 2
    D = 320km
    delhi to agra = 320/2 = 160 km

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