The average cost of 4 magazines is $40.
After a magazine that costs $70 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 4 magazines
= 4 x 40
= $160
New total cost of all the remaining magazines
= 160 - 70
= $90
(b)
Number of remaining magazines
= 4 - 1
= 3
New average cost of all the remaining magazines
= 90 ÷ 3
= $30
Answer(s): (a) $90; (b) $30