Один день.
Пошаговое объяснение:
За один день первая бригада соберёт 30кг.
130 + 30 = 160кг
А вторая за день 50кг.
120 + 50 = 170кг.
170кг > 160кг
ответ: За один день.
Пошаговое объяснение:
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ответ:б)1
Пошаговое объяснение:1 бригада собирет на след.день 160кг,а вторая-170кг и догонит первую