Tommy bought some pastries. He bought some croissants with $6.10 more than half his money. He then bought some wafers with $4.80 less than half of his remaining money. He then had $7.50 left. How much did he pay for the croissants?
| Croissants |
Remaining amount |
| 1 u + $6.10 |
1 u - $6.10 |
| |
Wafers |
Left |
| |
1 p - $4.80 |
1 p + $4.80 |
| |
|
$7.50 |
Working backwards.
Amount that Tommy had left = 1 p + 4.80
1 p + 4.80 = 7.50
1 p = 7.50 - 4.80 = 2.70
Remaining amount after he bought some croissants
= 2 p
= 2 x 2.70
= $5.40
Remaining amount after he bought some croissants = 1 u - 6.10
1 u - 6.10 = 5.40
1 u = 5.40 + 6.10
1 u = 11.50
Amount that Tommy spent on some croissants
= 1 u + 6.10
= 11.50 + 6.10
= $17.60
Answer(s): $17.60
