Answer:
The number of small boxes is 8
The number of large boxes is 6
Step-by-step explanation:
The total weigh is 800 pounds
Because each small box weighs 40 pounds and each big one weighs 80 pounds, let x denote the total number of small boxes and y the total number of large boxes, then:
40x + 80y = 800 .............................................................................(1)
The total number of boxes shipped is 14, the addition of the small and large boxes gives 14
x + y = 14 ............................................................................................(2)
The graph of equation (1) and (2) is shown below: