The graph shows the earnings that Irene's shop 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 $4200 from July to December?
(a)
Total earnings from July to November
= 3000 + 4000 + 2200 + 3800 + 3000
= $16000
(b)
Total earnings from July to November
= 6 x 4200
= $25200
Amount that must be earned in December
= 25200 - 16000
= $9200
Answer(s): (a) $16000; (b) $9200