The graph shows the earnings that Sarah's stationery store 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 $3100 from July to December?
(a)
Total earnings from July to November
= 2600 + 2400 + 2400 + 3400 + 4000
= $14800
(b)
Total earnings from July to November
= 6 x 3100
= $18600
Amount that must be earned in December
= 18600 - 14800
= $3800
Answer(s): (a) $14800; (b) $3800