Passage

Directions: In this problem, a question is given followed by three statements, labelled as A, B and C. Read the statements carefully and determine which of them is/are sufficient/necessary to answer the question.

What is the time interval for which the train 'Jaipur Amritsar Junction Express' stops each hour? A. The length of train 'Jaipur Amritsar Junction Express' is 250 m. It takes 15 seconds to cross a pole. B. The train 'Jaipur Amritsar Junction Express' covers a certain distance at a speed of 60 km/hr. C. Due to stopping for a fixed time interval each hour, its average speed reduces to 50 km/hr.

Statement A provides the speed of the train using the formula speed equals distance divided by time, which is 250 divided by 15, equaling 50 thirds meters per second, or 60 kilometers per hour. Statement B redundantly states the speed is 60 kilometers per hour. Statement C provides the average speed of 50 kilometers per hour, and using the formula stoppage time per hour equals the difference in speeds divided by the normal speed, the time is 10 divided by 60 hours, which equals 10 minutes; only A and C together are sufficient.

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