Предмет: Математика, автор: sophiabannova

Турист шел пешком 3 ч со скоростью 5 км/ч и 5 ч ехал на автомашине со скоростью 49 км/ч. Найдите среднюю скорость туриста на протяжении всего пути.
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Ответы

Автор ответа: tanyazybareva

0

3*5=15,5*49=245,245+15=260!Путь весь какой?Надо потом путь разделить на 260-получится средняя скорость,а так 260

Автор ответа: Dan2407

0

3*5=15(км)- турист шел пешком
5*49=245(км)- проехал на автомашине
15+245=260(км)-расстояние всего
5+3=8(ч.)- всего потратил
260:8=32,5(км/ч)- средняя скорость туриста

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