Answer:
Small Box = 13.75 kg
Large Box = 15.5 kg
Step-by-step explanation:
x=wt of small box y = large box
First delivery
6x + 5y = 160 solve for y = 32 - (6/5x)
Second Delivery
3y + 2x = 74 Substitute for y
3(32 - (6/5x)) + 2x = 74 and solve for x
96 - (18/5x) +2x = 74
x = 13.75
x = 13.75 = small box kg y = 32 - (6/5x) = large box = 15.5 kg