Two trains A and B of length 400 m and 400 x m respectively are moving with same speed If train A an...........

Quantitative Aptitude (Insurance) Problems on trains

Two trains A and B of length 400 m and (400 + x) m respectively are moving with same speed. If train A and B crosses a pole in 16 sec and 24 secs respectively then in what time train ‘B’ will cross 400 m long platform.

32 sec

40 sec

45 sec

54 sec

24 sec

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Explanation:

Speed of train A = 400/16 = 25 m/sec So, speed of train B = 25 m/sec ATQ, 400+??/ 25 = 24 ?? = 200 m Now time required to cross platform by B = 400+200+400/25 = 40 sec