Предмет: Математика, автор: rubyalexon

Андрей собрал мешок ябоок за 3 часа, Сергей за 2, а маленький Никита за 4, За сколько часов они соберут мешок яблок работая вместе?​


jekadva: = 12/13ч
jekadva: эт кого я обидела?
rubyalexon: ??

Ответы

Автор ответа: mmalinkat
0

Ответ:

Пошаговое объяснение:

1/3 часть собрал Андрей за час

1/2 часть собрал Сергей за час

1/4 часть собрал Никита

1/3 + 1/2 + 1/4 = 9\12 = 3/4 части мешка соберут все трое за час

1 : 3/4 = 4/3 часа = 1 час 20 минут понадобится всем троим ,чтобы собрать мешок яблок

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