Correct option is A
Given
Length of the train = 1768 m
Time taken to cross a pole = 68 seconds
Length of the platform = 338 m
Formula Used
Speed =
Time to cross a platform =
Solution
Speed of the train = m/s
Total distance to cross the platform = 1768 + 338 = 2106 m
Time taken to cross the platform = seconds
Final Answer
So the correct answer is (a)