pyramids

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a car travels 35 km in the first 20 minutes, 43 km in the second 30 minutes and 19 km in the last 18 minutes of a trip. what is the average speed in Km/mn?

  • pyramids -

    35 + 43 + 19 = 97 km

    20 + 30 + 18 = 68 mn

    97 / 68 = 1.426 km/mn

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