Предмет: Математика, автор: kurtizanka2889

Найдите скорость катера по течению реки и против течения,если собственная скорость катера 12 км/ч, а скорость теченич реки одна целая одна пятых км/ч

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Автор ответа: ndusha
1
12+1 1/5=13 1/5км/ч-скорость по течению
12-1 1/5=11-1/5=10 4/5км/ч-скорость против течения
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