Multiple Choice Questions on Two trains A and B start from Delhi and Chennai towards Chennai and Delhi respectively After passing........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

Two trains A and B start from Delhi and Chennai towards Chennai and Delhi respectively After passing...........

Quantitative Aptitude ( CCS) Problems on trains
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    Two trains A and B start from Delhi and Chennai towards Chennai and Delhi respectively. After passing each other they take 19 hours 30 minutes and 8 hours 40 minutes to reach Chennai and Delhi respectively. If the train from Delhi is moving at 80 km/hr then find the speed of the train from Chennai?

    110 kmph

    Incorrect Answer

    100 kmph

    Incorrect Answer

    90 kmph

    Incorrect Answer

    120 kmph

    Correct Answer
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    Explanation:

    Solution: 
    Speed of train B = Speed of train A * (t1/t2)1/2
    Speed of train B = 80 *  ((39/2)/26/3))1/2
    Speed of train B = 80 * 3/2 = 120 kmph

    By: Pranav Gupta
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