Winnie had some money. If she buys 7 sweets, she will have $10 left. If she buys 10 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.
7 S + 10 = 10 S + 4
10 S - 7 S = 10 - 4
3 S = 6
1 S = 6 ÷ 3 = 2
Cost of each sweet = $2
(b)
Total amount that Winnie had
= 10 x 2 + 4
= 20 + 4
= $24
Answer(s): (a) $2; (b) $24