The average cost of 5 fiction books is $40.
After a fiction book that costs $60 is removed,
- What is new total cost of all the remaining fiction books?
- What is new average cost of all the remaining fiction books?
(a)
Total cost of 5 fiction books
= 5 x 40
= $200
New total cost of all the remaining fiction books
= 200 - 60
= $140
(b)
Number of remaining fiction books
= 5 - 1
= 4
New average cost of all the remaining fiction books
= 140 ÷ 4
= $35
Answer(s): (a) $140; (b) $35