Correct Answer: (b) 32 km/h, 24 km/h
Solution:Let the speed of slow train and fast train be x and y respectively, According to question,
96/x - 96/y =1....(i)
After checking all the options one by one, only option (b) satisfied.
Hence, the speed of slow train = 24 km/h and speed of fast train = 32 km/h