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A train travels 360 km in 4 hours. If its speed is increased by 20 km/h, how much time will it take to cover the same distance?
  1. 3.27 hours
  2. 3.5 hours
  3. 4 hours
  4. None of these
Explanation

Speed = 360 ÷ 4 = 90 km/h

New speed = 90 + 20 = 110 km/h

Time = 360 ÷ 110 = 3.27 hours (approx.).


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