Предмет: Математика, автор: nikolay45

Из двух сёл, расстояние между которыми 18 км, навстречу друг другу одновременно вышли два пешехода и встретились через 2 ч. Скорость первого пешехода 4 км/ч. Найди скорость второго пешехода.

Ответы

Автор ответа: vmaluga2011

18:2=9 (км/ч) скорость сближения или сумма скоростей
9-4=5 (км/ч)
Ответ: скорость второго 5 км/ч

Автор ответа: Krutay0402

1) 4×2=8(км) прошел первый пешиход
2)18-8=10(км) прошел второй пешиход
3)10÷2=5(км/ч)
Ответ: 5 км/ч это скорость второго пешихода.

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