Irene had some money. If she buys 10 sweets, she will have $8 left. If she buys 12 sweets, she will have $4 left.
- How much does each sweet cost?
- How much money does she have?
(a)
Let 1 S be the price of 1 sweet.
10 S + 8 = 12 S + 4
12 S - 10 S = 8 - 4
2 S = 4
1 S = 4 ÷ 2 = 2
Cost of each sweet = $2
(b)
Total amount that Irene had
= 12 x 2 + 4
= 24 + 4
= $28
Answer(s): (a) $2; (b) $28