Предмет: Математика, автор: julisa2p67d3t

Ігор може назбирати ящик яблук за 18хв,а Валентин за 15 хв. Яку частину ящика буде заповнено за 3хв якщо вони збиратимуть яблука разом в один ящик?

Ответы

Автор ответа: lidiasaraa3

Ответ:11/30

Пошаговое объяснение:

1/18+1/15=11/90 ч.я./хв-Ігор і Валентин разом за 1 хв. 11/90*3=11/30 ч.я. за 3 хв

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