If Stu has 9 books and Albert has 4 times as many books as Stu, how many books do Stu and Albert have in total? Let's answer step by step:
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Albert has 4 * 9 books belonging to Stu = 36 books. So the pair have a combined total of 36 books belonging to Albert + 9 books belonging to Stu = 45 books. The answer: 45.
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