At a stationery kiosk, Stella paid $15 for 1 colouring book and 2 magazines. The colouring book cost $8 more than the total cost of all the magazines.
- How much did 1 colouring book cost?
- How much did 1 magazine cost?
(a)
Cost of 2 magazines = 1 u
Cost of 1 colouring book = 1 u + 8
Total cost of 2 magazines and 1 colouring book
= 1 u + 1 u + 8
= 2 u + 8
2 u + 8 = 15
2 u = 15 - 8
2 u = 7
1 u = 7 ÷ 2 = 3.50
Cost of 1 colouring book
= 1 u + 8
= 3.50 + 8
= $11.50
(b)
Cost of 2 magazines = $3.50
Cost of 1 magazine
= 3.50 ÷ 2
= $1.75
Answer(s): (a) $11.50; (b) $1.75