At a shop, Jaslyn paid $43 for 1 sticker and 3 buttons. The sticker cost $7 more than each button.
- How much is 1 button?
- How much is 1 sticker?
(a)
Cost of 1 button = 1 u
Cost of 3 buttons = 3 u
Cost of 1 sticker = 1 u + 7
Total cost of 1 sticker and 3 buttons
= 3 u + 1 u + 7
= 4 u + 7
4 u + 7 = 43
4 u = 43 - 7
4 u = 36
1 u = 36 ÷ 4 = 9
Cost of 1 button
= 1 u
= $9
(b)
Cost of 1 sticker
= 1 u + 7
= 9 + 7
= $16
Answer(s): (a) $9; (b) $16