Sabrina spent
311 of her money on some staplers. She spent
18 of the remaining money on some foolscaps and
37 of what was left on some pencils.
- What fraction of her money was left?
- Given that the pencils cost $18 more than the foolscaps, find the sum of money that Sabrina had at first.
| Staplers |
Remaining money |
| 3 |
8 |
| |
Foolscaps |
Left |
| |
1 |
7 |
| |
|
Pencils |
Rest |
| 3 u |
1 u |
3 u |
4 u |
(a)
Fraction of money left after spending on the staplers
= 1 -
311 =
811 Fraction of remaining money after spending on the foolscaps
= 1 -
18 =
78 Fraction of what was left after spending on the pencils
= 1 -
37 =
47 Fraction of money that was left =
411 (b)
Amount that Sabrina spent on the foolscaps = 1 u
Amount that Sabrina spent on the pencils = 3 u
Amount that the pencils cost more than the foolscaps
= 3 u - 1 u
= 2 u
2 u = 18
1 u = 18 ÷ 2 = 9
Amount that Sabrina had at first
= 11 u
= 11 x 9
= $99
Answer(s): (a)
411; (b) $99
