The weight of the large box is 60 pounds
The weight of the small box is 25 pounds
How to get the weight
Weight of small box = 85 - x
Number of large box = 65
Number of small box = 55
total pounds = 5275
we have
65 * x + 55( 85 - x) = 5275
65x + 4675 - 55x = 5275
65x - 55x = 5275 - 4675
10x = 600
x = 600 / 10
x = 60
Weight of small box = 85 - x
85 - 60
= 25
The weight of the large box is 60 pounds
The weight of the small box is 25 pounds