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Q: A train covers 400 km at a uniform speed. If the speed had been 10 km/h more, it would have taken 2 hours less for the same journey. What is the usual time taken (in hours) by train to complete the journey?
  • A. 15
  • B. 10
  • C. 12
  • D. 8
Correct Answer: Option B -
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Explanations:

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