Answer:
4
Step-by-step explanation:
If each weight is the same than we can simple multiply the weight of one by the number of weights there are

1 1/2 = 3/2. 7 1/2 = 15/2
15/2 divided by 3/2 = 5 batches of cookies
416 the six have a bar nation on the top:)
The answer is B
Solution:
Find perimeter (L+B+L+B)
600+300+600+300= 1,800
1,800/3= 600
600x500= 300,000