Answer:
weight of large box=15.250 kgm
wight of box=13.500 kgm.
Explanation:
let weight of large box=x kgm
and weight of small box=y kgm.
4x+8y=169
2x+3y=71
multiply by 2
4x+6y=142
subtract from first
2y=27
y=27/2=13.500 kgm
4x+8(27/2)=169
4x+108=169
4x=169-108
4x=61
x=61/4=15.250 kgm