Correct option is D
Given
Speed of first train = 110 km/hr
Speed of second train = 150 km/hr
Length of one train = 500 m
Time taken to cross = 10 seconds
Formula Used
Relative Speed = Speed 1 + Speed 2 (for opposite directions)
Distance = Relative Speed × Time
Solution
Relative speed = 110 + 150 = 260 km/hr
Convert into m/s = 260 × m/s
Total distance covered to cross each other = Length of first train + Length of second train
Distance = Speed × Time
Total distance = m
Total distance = 722.22 m
Length of the other train = Total distance - Length of first train
Length of other train = 722.22 - 500 = 222.22 m
Final Answer
So the correct answer is (d)
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