Предмет: Математика, автор: котик3344

мастер и ученик сделали партию деталей за 3 ч.Если бы мастер работал бы один,то он выполнил эту работу за 4ч.Какую часть работы выполнял каждый из них за 1 ч?

Ответы

Автор ответа: Sasha261103

если мастер один делает всю работу за 4 часа, то за 1 час он делает 1/4 все работы, вместе они всю работу делают за 3 часа, значит за час они вместе делают 1/3 всейработы. 1/3-1/4=4/12-3/12=1/12 делает ученик за час.ответ 1/4 мастер, 1/12 ученик

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