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?
Albert has 4 * 9 books belonging to Stu = <<4*9=36>>36 books.
So the pair have a combined total of 36 books belonging to Albert + 9 books belonging to Stu = <<36+9=45>>45 books.
#### 45