The graph shows the earnings that Xylia's bookstore made from July to November
- What was the total earnings from July to November?
- How much money must be earned in December to have average earnings of $3900 from July to December?
(a)
Total earnings from July to November
= 3400 + 2000 + 3400 + 2400 + 3000
= $14200
(b)
Total earnings from July to November
= 6 x 3900
= $23400
Amount that must be earned in December
= 23400 - 14200
= $9200
Answer(s): (a) $14200; (b) $9200