Lee bought some pastries. He bought some puffs with $8.70 more than half his money. He then bought some wafers with $6.50 less than half of his remaining money. He then had $15.20 left. How much did he pay for the puffs?
| Puffs |
Remaining amount |
| 1 u + $8.70 |
1 u - $8.70 |
| |
Wafers |
Left |
| |
1 p - $6.50 |
1 p + $6.50 |
| |
|
$15.20 |
Working backwards.
Amount that Lee had left = 1 p + 6.50
1 p + 6.50 = 15.20
1 p = 15.20 - 6.50 = 8.70
Remaining amount after he bought some puffs
= 2 p
= 2 x 8.70
= $17.40
Remaining amount after he bought some puffs = 1 u - 8.70
1 u - 8.70 = 17.40
1 u = 17.40 + 8.70
1 u = 26.10
Amount that Lee spent on some puffs
= 1 u + 8.70
= 26.10 + 8.70
= $34.80
Answer(s): $34.80
