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Q: A train covers 450 km at a uniform speed. If the speed had been 5 km/h more, it would have taken 1 hour less to cover the same distance. How much time will it take to cover 315 km at its usual speed?
  • A. 6 h 30 m
  • B. 7 h
  • C. 7 h 52 m
  • D. 6 h 18 m
Correct Answer: Option B -
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Explanations:

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