Предмет: Математика, автор: опиратив

Катер проплыл по течению реки за 2,4ч расстояние 55 1/5км Скорость течение реки 2,5 км /ч Найдите собственную скорость катера

Ответы

Автор ответа: Аноним

0

1)55 1/5:2,4= 23 (км/ч)- скоро катера по течению.
2)23-2,5= 20,5 (км/ч)
Ответ: 20,5 км/ч собственная скорость.

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