Предмет: Математика, автор: stepannenev7

Решите двумя способами номер 238

Приложения:

Ответы

Автор ответа: fedor096

1

Ответ:

1)(6+8)*20=280 страниц

2)6*20+8*20=120+160=280

Пошаговое объяснение:

Автор ответа: youKnow12

1

1 способ:

6*20=120 (стр.) за 20 минут распечатает 1 машина
8*20=160(стр.) за 20 минут распечатает 2 машина.
160+120=280 (стр.) за 20 минут рспечатают вместе 2 машины

2 способ:

6*20+8*20= 280 (стр.)

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