Tony kept track of the number of characters in each book he read.

Question

Characters per book
Stem Leaf
1 0 2 6
2 4 8
3
4 1 4 5 9
How many books had at least 40 characters?

Answer 1

Based on the stem-and-leaf plot, the numbers 4 and 1 both have leaves of 4 and 5. This means that there are two books with at least 40 characters: the book with 41 characters and the book with 45 characters. Therefore, there are 2 books with at least 40 characters.