Предмет: Математика, автор: swetlanasoloz

Аня и Таня чистят мешок картошки за 56 мин.таня и Аня чистят такой же мешок картошки за 72 мин.Аня и Яна чистят за 63 мин.За сколько минут почистят картошки Аня,Таня и Яна,работая вместе?

Ответы

Автор ответа: 2005айгуль

72-56= за 16 мин почистит аня
56-16= за 40 мин почистит таня
72-16= за 56 мин почистит яна

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