Xylia had some money. If she buys 5 chocolate bars, she will have $6 left. If she buys 7 chocolate bars, she will have $2 left.
- How much does each chocolate bar cost?
- How much money does she have?
(a)
Let 1 C be the price of 1 chocolate bar.
5 C + 6 = 7 C + 2
7 C - 5 C = 6 - 2
2 C = 4
1 C = 4 ÷ 2 = 2
Cost of each chocolate bar = $2
(b)
Total amount that Xylia had
= 7 x 2 + 2
= 14 + 2
= $16
Answer(s): (a) $2; (b) $16