At a shop, Usha paid $69 for 1 sticker and 9 coins. The sticker cost $9 more than each coin.
- How much is 1 coin?
- How much is 1 sticker?
(a)
Cost of 1 coin = 1 u
Cost of 9 coins = 9 u
Cost of 1 sticker = 1 u + 9
Total cost of 1 sticker and 9 coins
= 9 u + 1 u + 9
= 10 u + 9
10 u + 9 = 69
10 u = 69 - 9
10 u = 60
1 u = 60 ÷ 10 = 6
Cost of 1 coin
= 1 u
= $6
(b)
Cost of 1 sticker
= 1 u + 9
= 6 + 9
= $15
Answer(s): (a) $6; (b) $15