Question
Two trains, 'P' and 'Q', are
moving with speeds of 16 m/s and 24 m/s, respectively. The lengths of the trains are in the ratio 3:5. If it takes 8 seconds for the trains to completely pass each other while traveling in opposite directions, calculate the length of train 'P'.Solution
ATQ, Let the length of trains 'P' and 'Q' be '3p' metres and '5p' metres, respectively. ATQ; (3p+5p)/(16+24) = 8 or, 8p = 8×40 So, p = 40 So, length of train 'P' = 3p = 3 × 40 = 120 metres
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