Question

There are 25 students in Mrs. Venetozzi’s class at the beginning of the school year, and the average number of siblings for each student is 3. A new student with 8 siblings joins the class in November.The average number of siblings that each student has is

Answer 1

The new average is

83

÷

26

=

3

5

26

exactly

83

÷

26

≈

3.192

to 3 decimal places

Explanation:

Assumption: None of the siblings are in that class.

Original numbers

25 students with 3 siblings each gives

25

×

3

=

75

siblings

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

New numbers

1 new student takes the total students to 25+1 = 26

The new total siblings is

75

+

8

=

83

The new average is

83

÷

26

=

3

5

26

exactly

83

÷

26

≈

3.192

to 3 decimal places

Answer 2

THE ANSWER IS 83!!!!!!!!!!