Let:
x = number of small boxes
y = number of large boxes
Each small box of paper weighs 40 pounds and each large box of paper weighs 80 pounds. all boxes weighing 800 pounds altogether, so:
![40x+80y=800](https://img.qammunity.org/2023/formulas/mathematics/college/iqnxinzrk5smg1wrt0y5w6nr6dy0178riu.png)
A total of 14 boxes of paper were shipped, so:
![x+y=14](https://img.qammunity.org/2023/formulas/mathematics/college/s12r22ei48e5rlskh05y8gbmoen4qzkjkk.png)
therefore:
![\begin{cases}40x+80y=800_{\text{ }}(1) \\ x+y=14_{\text{ }}(2)\end{cases}](https://img.qammunity.org/2023/formulas/mathematics/college/j5cuzzqtdv1d2btvuteq5ck6cm37n03j43.png)
8 small boxes were shipped and 6 large boxes were shiped