- A12
- B10
- C8
- D15
Step-by-Step Solution
Relative speed = 36 + 54 = 90 km/h = 25 m/s; total length = 150 + 100 = 250 m; time = 250 ÷ 25 = 10 seconds.
Answer: B) 10
Two trains, 150 m and 100 m long, run in opposite directions at 36 km/h and 54 km/h. How long do they take to completely cross each other? (answer in seconds)
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