Предмет: Алгебра, автор: havaayoubova

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Решите задачу с помощью уравнения:
Катер проплывает 15 км против течения и 20 км по течению реки за 4 ч. Найдите скорость течения, если собственная скорость катера равна 12 км/ч.

Ответы

Автор ответа: ulja14112009

Ответ:

15+2=17(км/ч)скорость по течению;

15-2=13(км/ч)скорость против течения;

17×2=34(км/ч)проплыл по течению;

13×3=39(км/ч)проплыл против течения;

34+39=73(км/ч)проплыл катер всего.

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