Answered

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12.Первые два часа автомобиль ехал со скоростью 120 км/ч, следующие два часа - со
скоростью 85 км/ч, а затем три часа - со скоростью 50 км/ч. Найдите среднюю скорость
автомобиля на протяжении всего пути. Ответ дайте в км/ч.

Sagot :

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