At a bookstore, Ava paid $12 for 1 novel and 2 magazines. The novel cost $3 more than the total cost of all the magazines.
- How much did 1 novel cost?
- How much did 1 magazine cost?
(a)
Cost of 2 magazines = 1 u
Cost of 1 novel = 1 u + 3
Total cost of 2 magazines and 1 novel
= 1 u + 1 u + 3
= 2 u + 3
2 u + 3 = 12
2 u = 12 - 3
2 u = 9
1 u = 9 ÷ 2 = 4.50
Cost of 1 novel
= 1 u + 3
= 4.50 + 3
= $7.50
(b)
Cost of 2 magazines = $4.50
Cost of 1 magazine
= 4.50 ÷ 2
= $2.25
Answer(s): (a) $7.50; (b) $2.25