Предмет: Математика, автор: Инкогнитоххх

Составьте уравнение по условию задачи.
Два насоса, работая одновременно, могут откачать воду из цистерны за 18 часов.Первый насос мог бы откачать эту воду на 9 часов быстрее, чем второй.За ка
кое время мог бы откачать воду из цистерны каждый из насосов, работая отдельно?

Ответы

Автор ответа: Shokoladka2002

Время откачки равно единица (то есть объем цистерны) делить на скорость откачки.
Обозначим время, требующееся первому насосу за Х.
Тогда время, требующееся второму насосу Х+9
Скорость первого насоса 1/Х
Скорость второго насоса 1/(Х+9)
Суммарная скорость обоих насосов 1/18
Уравнение: (1/Х)+(1/(Х+9))=1/18
Отметьте как лучший ответ))

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