Answer:
The large box weighs 61/4 Kg and the small box weighs 25/4 Kg
Explanation:
Assume the large box is x and the small box is y
6x+2y=104, 3x+5y=77 therefore, 6x+2y=104, 6x+10y=154
8y=54 y=25/4 x=61/4
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