Question
The average cost of 7 books is $40.
After 2 books are removed,
the average cost of the remaining books is $30.
  1. What is the total cost of the 2 books that are removed?
  2. What is the average cost of the 2 books that are removed?
3 m
(a)

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

The average cost of 7 books is $40.
After 2 books are removed,
the average cost of the remaining books is $30.
  1. What is the total cost of the 2 books that are removed?
  2. What is the average cost of the 2 books that are removed?