Предмет: Математика, автор: динолиси

расстояние между 2 портами равно 504 км двигаясь против течения реки теплоход проходит это расстояние за 21ч за сколько часов он пройдет это расстояние по течению реки если скорость течения равна 2 км ч

Ответы

Автор ответа: Аноним

504 = 21 * ( X - 2 )
X - 2 = 24
X = 26 ( км/час ) собственная скорость теплохода
--------------------
504 : ( 26 + 2 ) = 18 ( часов )
ОТВЕТ за 18 часов

Автор ответа: динолиси

неправильно

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