Multiple Choice Questions on Two trains are moving in opposite directions at 60 km hr and 90 km hr Their lengths are 1 10 km and ........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

Two trains are moving in opposite directions at 60 km hr and 90 km hr Their lengths are 1 10 km and ...........

Quantitative Aptitude ( CCS) Problems on trains
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    Two trains are moving in opposite directions at 60 km/hr and 90 km/hr. Their lengths are 1.10 km and 0.9 km respectively. The time taken by the slower train to cross the faster train in seconds is ?

    42 sec.

    Incorrect Answer

    48 sec.

    Correct Answer

    54 sec.

    Incorrect Answer

    60 sec.

    Incorrect Answer
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    Explanation:

    Relative speed = 60 + 90 = 150 km/hr.

    = 150 x 5/18 = 125/3 m/sec.

    Distance covered = 1.10 + 0.9 = 2 km = 2000 m.

    Required time = 2000 x 3/125 = 48 sec.

    Hence, option 2 is the correct answer.

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