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Two trains leave Pune for Mumbai, 180 km away, on parallel lines: one at 7 a.m. at 60 km/h and another at 7:45 a.m. at 75 km/h. How many minutes after the first train does the second reach Mumbai?

Competition practiceProblems on Trains
  • A9 min
  • B45 min
  • C36 min
  • D15 min

Step-by-Step Solution

First: → 10:00 a.m. Second: 24 min → 10:09 a.m. So 9 min later; it never catches up (it would need 3 to make up the 45 km head start).
Answer: A) 9 min

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