Предмет: Математика, автор: nurayka86

двигаясь по шоссе мотоциклист ехал 15 мин со скоростью 60 км в час затем проселочную дорогу он преодалел за 10 мин со скоростью 45 км в час а оставшиеся 88 км по шоссе он проехал а 55 мин . Чему равна средняя скорость на всем пути​

Ответы

Автор ответа: ELLYS
1

Ответ:

67

Пошаговое объяснение:

55 мин = 55/60 = 11/12

88 делим на 11/12 = 88*12/11 = 96 км/ч - ехал последние 88 км

60+45+96 = 201

201/3=67 - средняя скорость

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