Menu
Home / Arithmetic Aptitude / Time and Work :: Discussion

Discussion :: Time and Work

  1. Two trains 140 m and 160 m long run at the speed of 60 km/hr and 40 km/hr respectively in opposite directions on parallel tracks. The time (in seconds) which they take to cross each other, is:

    2. A.

    9
    B.

    9.6
    C.

    10
    D.

    10.8

    View Answer

    Workspace

    View Answer

    Answer : Option D

    Explanation :

     

    Relative speed = (60 + 40) km/hr = 100 x 5 m/sec = 250 m/sec.
    18 9

    Distance covered in crossing each other = (140 + 160) m = 300 m.

     

    Required time = 300 x 9 sec = 54 sec = 10.8 sec.
    250 5

Write your comments here:

Be The First To Comment