- A8
- B15
- C10
- D12
Step-by-Step Solution
Relative speed = 40 + 50 = 90 km/h = 25 m/s. Total length = 250 m. Time = 250/25 = 10 s.
Answer: C) 10
Two trains, 150 m and 100 m long, move in opposite directions at 40 km/h and 50 km/h respectively. How many seconds do they take to completely cross each other?
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