Quant Boosters - Maneesh - Set 3



  • Let length of train is is ‘L’ km and speed ‘S’ Km/hr
    L/X-11 = 20/3600 = 1/180
    L/X = 9/3600 = 1/400
    X = 400 L
    180 L = X – 11
    180L = 400L-11
    220L = 11
    L = 11/220 = 1/20 KM = 1000/20 =50 meters


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