one fourth of a certain Journey is covered at the rate of 25 km /per hour . One third at the rate of 30 km/ per hour and the rest at 50 km /per hour. find the average speed of the whole journey.

Averages

  • Ravi Gupta
  • Ravi Gupta
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  • 07 Mar
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  • 84 Views
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  • 8 Answers