At a shop, Esther paid $44 for 1 button and 7 cards. The button cost $4 more than each card.
- How much is 1 card?
- How much is 1 button?
(a)
Cost of 1 card = 1 u
Cost of 7 cards = 7 u
Cost of 1 button = 1 u + 4
Total cost of 1 button and 7 cards
= 7 u + 1 u + 4
= 8 u + 4
8 u + 4 = 44
8 u = 44 - 4
8 u = 40
1 u = 40 ÷ 8 = 5
Cost of 1 card
= 1 u
= $5
(b)
Cost of 1 button
= 1 u + 4
= 5 + 4
= $9
Answer(s): (a) $5; (b) $9