Nicole had some money. If she buys 13 chocolate bars, she will have $10 left. If she buys 15 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.
13 C + 10 = 15 C + 2
15 C - 13 C = 10 - 2
2 C = 8
1 C = 8 ÷ 2 = 4
Cost of each chocolate bar = $4
(b)
Total amount that Nicole had
= 15 x 4 + 2
= 60 + 2
= $62
Answer(s): (a) $4; (b) $62