Mary spent
310 of her money on some folders. She spent
27 of the remaining money on some files and
45 of what was left on some punchers.
- What fraction of her money was left?
- Given that the punchers cost $8 more than the files, find the sum of money that Mary had at first.
| Folders |
Remaining money |
| 3 |
7 |
| |
Files |
Left |
| |
2 |
5 |
| |
|
Punchers |
Rest |
| 3 u |
2 u |
4 u |
1 u |
(a)
Fraction of money left after spending on the folders
= 1 -
310 =
710 Fraction of remaining money after spending on the files
= 1 -
27 =
57 Fraction of what was left after spending on the punchers
= 1 -
45 =
15 Fraction of money that was left =
110 (b)
Amount that Mary spent on the files = 2 u
Amount that Mary spent on the punchers = 4 u
Amount that the punchers cost more than the files
= 4 u - 2 u
= 2 u
2 u = 8
1 u = 8 ÷ 2 = 4
Amount that Mary had at first
= 10 u
= 10 x 4
= $40
Answer(s): (a)
110; (b) $40
