Speed and Percentage Reduction Journey Problem

Speed and Percentage Reduction Journey Problem

TGM Original

James ran \(14\) km from his house in \(1\) hour \(45\) minutes. He rested for \(40\) minutes before walking home. His walking speed was \(40\%\) less than his running speed.
Calculate

  1. his running speed, in km/h.
  2. his walking time, in hours and minutes.
  3. his average speed, in m/s, for the whole journey.

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Answer:(a) \(8\text{ km/h}\) (b) \(2\) hours \(55\) minutes (c) \(1\frac{11}{24}\text{ m/s}\) (approximately \(1.46\text{ m/s}\))

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