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Автор - ritalov

Теплоход за 3ч прошёл по реке69км собственная скорость теплохода 25км/ч кокова скорость течения реки

Ответ

Автор - meirzhanzhick36
69:3=23(км/ч)
Ответ:23 км/ч это скорость течения реки

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