Ivory bought 8 wafers more than croissants. Each wafer cost $1.30 while each croissant cost $2.30. Given that she spent $28.40 in total, how many croissants did Ivory buy?
| |
Croissants |
Wafers |
Total |
| Number |
1 u |
1 u + 8 |
|
| Value |
$2.30 |
$1.30 |
|
| Total value |
2.3 u |
1.3 u + 10.4 |
1.3 u + 10.4 |
Amount that Ivory paid for the croissants
= 1 u x 2.30
= 2.3 u
Amount that Ivory paid for wafers
= 1.3 x (1 u + 8)
= 1.3 u + 10.4
Total amount that Ivory paid
= 2.3 u + 1.3 u + 10.4
= 3.6 u + 10.4
3.6 u + 10.4 = 28.4
3.6 u = 28.4 - 10.4
3.6 u = 18
1 u = 18 ÷ 3.6 = 5
Number of croissants that Ivory bought
= 1 u
= 5
Answer(s): 5
