Eric bought some pastries. He bought some wafers with $8.30 more than half his money. He then bought some croissants with $7.60 less than half of his remaining money. He then had $11.50 left. How much did he pay for the wafers?
| Wafers |
Remaining amount |
| 1 u + $8.30 |
1 u - $8.30 |
| |
Croissants |
Left |
| |
1 p - $7.60 |
1 p + $7.60 |
| |
|
$11.50 |
Working backwards.
Amount that Eric had left = 1 p + 7.60
1 p + 7.60 = 11.50
1 p = 11.50 - 7.60 = 3.90
Remaining amount after he bought some wafers
= 2 p
= 2 x 3.90
= $7.80
Remaining amount after he bought some wafers = 1 u - 8.30
1 u - 8.30 = 7.80
1 u = 7.80 + 8.30
1 u = 16.10
Amount that Eric spent on some wafers
= 1 u + 8.30
= 16.10 + 8.30
= $24.40
Answer(s): $24.40
