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Miscellaneous·2013·Easy

If a body covers a distance at the rate of x km/hr and another equal distance at the rate of y km/hr, then the average speed in km/hr is

If a body covers a distance at the rate of x km/hr and another equal distance at the rate of y km/hr, then the average speed in km/hr is

Options

  1. a.

    (x + y)/2

  2. b.

    √xy

  3. c.

    2xy/(x + y)

    Correct answer
  4. d.

    (x + y)/xy

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