At a stationery shop, Maya paid $13 for 1 magazine and 2 colouring books. The magazine cost $6 more than the total cost of all the colouring books.
- How much did 1 magazine cost?
- How much did 1 colouring book cost?
(a)
Cost of 2 colouring books = 1 u
Cost of 1 magazine = 1 u + 6
Total cost of 2 colouring books and 1 magazine
= 1 u + 1 u + 6
= 2 u + 6
2 u + 6 = 13
2 u = 13 - 6
2 u = 7
1 u = 7 ÷ 2 = 3.50
Cost of 1 magazine
= 1 u + 6
= 3.50 + 6
= $9.50
(b)
Cost of 2 colouring books = $3.50
Cost of 1 colouring book
= 3.50 ÷ 2
= $1.75
Answer(s): (a) $9.50; (b) $1.75