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Brut [27]
4 years ago
15

Eric has been donating books he no longer needs to his local library. After 3 months of donating, he had 157 books left in his r

oom. After 8 months of donating, he had 102 books left in his room. How many books per month did Eric donate on average between months 3 and 8?
Mathematics
2 answers:
Aloiza [94]4 years ago
7 0
11 books;

157 books - 102 books = 55 books (donated)
55 books divided by those 5 months in between is 11 books
vampirchik [111]4 years ago
4 0
11 books is the answer 
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