ABC26GN3864 · Problems on Trains

Subject: General Aptitude · Chapter: Problems on Trains · Exam: · Marks: · Difficulty:

A man sitting in a train which is travelling at 50 kmph observes that a goods train, travelling in opposite direction, takes 9 seconds to pass him. If the goods train is $280 m$ long, find its speed.

Answer

Answer (as printed):

Explanation

Relative speed $=\left(\frac{280}{9}\right) \mathrm{m} / \mathrm{sec}=\left(\frac{280}{9} \times \frac{18}{5}\right) \mathrm{kmph}=112 \mathrm{kmph}$. ∴ Speed of goods train $=(112-50) \mathrm{kmph}=62 \mathrm{kmph}$.

Explanation as extracted from the printed page; notation may be imperfect.

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