Answer :
Answer: 9 boxes weigh 21.6 pounds.
If 5 boxes weigh 12 pounds, we can find the weight of one box by dividing 12 pounds by 5 boxes:
12 pounds ÷ 5 boxes = 2.4 pounds per box
Now, we can find the weight of 9 boxes by multiplying the weight of one box by 9:
2.4 pounds per box × 9 boxes = 21.6 pounds
So, 9 boxes weigh 21.6 pounds.
