The table shows the number of books read by 42 students. Two of the numbers in the table are accidentally painted over.

  1. (a)

    On average, each student read 2.5 books. What was the total number of books read by all the students?
    Ans : (a)___

  2. (b)

    How many students read 4 books each?
    Ans : (b)___

Applying charts and the meanLetters represent numbers中文
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Worked solution

9(a)

1. Calculate the total number of books using the average formula: Total = Average × Number of students

Total number of books=2.5×42=105\text{Total number of books} = 2.5 \times 42 = 105

Answer

105

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