Eric bought some pastries. He bought some scones with $7.60 more than half his money. He then bought some shortbreads with $4.20 less than half of his remaining money. He then had $6.30 left. How much did he pay for the scones?
| Scones |
Remaining amount |
| 1 u + $7.60 |
1 u - $7.60 |
| |
Shortbreads |
Left |
| |
1 p - $4.20 |
1 p + $4.20 |
| |
|
$6.30 |
Working backwards.
Amount that Eric had left = 1 p + 4.20
1 p + 4.20 = 6.30
1 p = 6.30 - 4.20 = 2.10
Remaining amount after he bought some scones
= 2 p
= 2 x 2.10
= $4.20
Remaining amount after he bought some scones = 1 u - 7.60
1 u - 7.60 = 4.20
1 u = 4.20 + 7.60
1 u = 11.80
Amount that Eric spent on some scones
= 1 u + 7.60
= 11.80 + 7.60
= $19.40
Answer(s): $19.40
