The average cost of 3 magazines is $30.
After a magazine that costs $60 is removed,
- What is new total cost of all the remaining magazines?
- What is new average cost of all the remaining magazines?
(a)
Total cost of 3 magazines
= 3 x 30
= $90
New total cost of all the remaining magazines
= 90 - 60
= $30
(b)
Number of remaining magazines
= 3 - 1
= 2
New average cost of all the remaining magazines
= 30 ÷ 2
= $15
Answer(s): (a) $30; (b) $15