Jenson bought some pastries. He bought some wafers with $6.50 more than half his money. He then bought some tarts with $1.80 less than half of his remaining money. He then had $5.40 left. How much did he pay for the wafers?
| Wafers |
Remaining amount |
| 1 u + $6.50 |
1 u - $6.50 |
| |
Tarts |
Left |
| |
1 p - $1.80 |
1 p + $1.80 |
| |
|
$5.40 |
Working backwards.
Amount that Jenson had left = 1 p + 1.80
1 p + 1.80 = 5.40
1 p = 5.40 - 1.80 = 3.60
Remaining amount after he bought some wafers
= 2 p
= 2 x 3.60
= $7.20
Remaining amount after he bought some wafers = 1 u - 6.50
1 u - 6.50 = 7.20
1 u = 7.20 + 6.50
1 u = 13.70
Amount that Jenson spent on some wafers
= 1 u + 6.50
= 13.70 + 6.50
= $20.20
Answer(s): $20.20
