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Q: Train A takes 45 minutes more than train B to travel a distance of 450 km. Due to engine trouble speed of train B falls by a quarter, so it takes 30 minutes more than Train A to complete the same journey. What is the speed of Train A (in km/hr)?
  • A. 90
  • B. 120
  • C. 100
  • D. 110
Correct Answer: Option C -
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Explanations:

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