Sabrina had some money. If she buys 5 sweets, she will have $8 left. If she buys 7 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.
5 S + 8 = 7 S + 4
7 S - 5 S = 8 - 4
2 S = 4
1 S = 4 ÷ 2 = 2
Cost of each sweet = $2
(b)
Total amount that Sabrina had
= 7 x 2 + 4
= 14 + 4
= $18
Answer(s): (a) $2; (b) $18