Предмет: Математика, автор: Аноним

26. Расстояние длиной 315 км поезд проходит за 4,5 часа.
За сколько времени поезд пройдет расстояние длиной
385 км?
А)6,5 час
В)5,5 час
C) 4,5 час
D) 5 час
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Ответы

Автор ответа: prettypushkova
10

Выражение: 385 : (315 : 4,5).

1) 315 : 4,5 = 70 км/ч - скорость поезда;

2) 385 : 70 = 5,5 ч - время движения.

Ответ: В) 5,5 час.


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