The graph shows the earnings that Opal'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 $3200 from July to December?
(a)
Total earnings from July to November
= 3000 + 4000 + 3400 + 3000 + 2200
= $15600
(b)
Total earnings from July to November
= 6 x 3200
= $19200
Amount that must be earned in December
= 19200 - 15600
= $3600
Answer(s): (a) $15600; (b) $3600