Two trains 120 m and 130 m long run in opposite directions at 40 km/h and 50 km/h. How long do they take to cross each other completely?

A. 10 seconds

B. 90 seconds

C. 12 seconds

D. 15 seconds

Doubtly AI Asked 27 Oct 2026 AI-generated · not yet verified ssc cgl Save WhatsApp Report

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Answer: A. 10 seconds

Answer: (A) 10 seconds

Opposite directions: relative speed = 90 km/h = 25 m/s. Distance = 120 + 130 = 250 m.

Time = 250 ÷ 25 = 10 seconds. (90 s would be the answer for the same direction.)

Doubtly AI · 27 Oct 2026 AI-generated · not yet verified Report

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