Question

tisha kept track of the number of characters in each book she read.
characters per book
number of characters
0-4
5-9
10-14
15-19
20-24
25-29
30-34
35-39
40-44
number of books
0 10 20 30 40 50 60 70 80
how many books are there in all?
books

Explanation:

Step1: Identify each bar's value

• 0 - 4: 60
• 5 - 9: 0
• 10 - 14: 70
• 15 - 19: 70
• 20 - 24: 80
• 25 - 29: 0
• 30 - 34: 20
• 35 - 39: 50
• 40 - 44: 80

Step2: Sum all values

Sum = \( 60 + 0 + 70 + 70 + 80 + 0 + 20 + 50 + 80 \)
Calculate step - by - step:
\( 60+0 = 60 \)
\( 60 + 70 = 130 \)
\( 130 + 70 = 200 \)
\( 200 + 80 = 280 \)
\( 280+0 = 280 \)
\( 280 + 20 = 300 \)
\( 300 + 50 = 350 \)
\( 350 + 80 = 430 \)

Answer:

430