Предмет: Алгебра, автор: joo0opppa

Катер прошёл 15 км по течению реки и 9 км против течения, затратив на весь путь 3 часа. Какова собственная скорость катера если скорость течения равна 2 км/ч.

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Автор ответа: georgpokataev

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