Предмет: Математика, автор: тимур424

№169пж!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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Автор ответа: SenatorPL

0

1)11,5-9,2=2,3(кг)-масса пустого ящика

2)2,3:11,5*100%=20%-составляет масса пустого ящика от массы ящика с

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