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Q:

A person crosses a 600 m long street in 5 minutes. What is his speed in km per hour?

  • A. 3.6
    wrong
  • B. 7.2correct
  • C. 8.4
  • D. 10

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Speed = 600/ 5 x 60 m/sec. = 2 m/sec. = 2 x 18/5km/hr =7.2 km/h

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