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Miscellaneous·2019·Easy

A race has three parts. The speed and time required to complete the individual parts for a runner is displayed on the following chart: Part I Part II Part III Speed (kmph) 9 8 7.5 Time (minutes) 50 80 100 What is the average speed of this runner?

A race has three parts. The speed and time required to complete the individual parts for a runner is displayed on the following chart:
Part I Part II Part III
Speed (kmph) 9 8 7.5
Time (minutes) 50 80 100
What is the average speed of this runner?

Options

  1. a.

    8.17 kmph

  2. b.

    8.00 kmph

  3. c.

    7.80 kmph

  4. d.

    7.77 kmph

    Correct answer

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