Answer: The total number of bottles in Allen's collection after 4 weeks will be 400.
Step-by-step explanation:
I got the answer 400 bottles because Allen is starting with his existing collection, which consists of 300 bottles. Allen will collect 25 bottles every week, which he does for 4 weeks. 25 x 4 = 100. So then you would add the 100 bottles to the 300 bottles and get 400 bottles.
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