Min spent
16 of her money on some notebooks. She spent
15 of the remaining money on some pencils and
34 of what was left on some punchers.
- What fraction of her money was left?
- Given that the punchers cost $20 more than the pencils, find the sum of money that Min had at first.
| Notebooks |
Remaining money |
| 1 |
5 |
| |
Pencils |
Left |
| |
1 |
4 |
| |
|
Punchers |
Rest |
| 1 u |
1 u |
3 u |
1 u |
(a)
Fraction of money left after spending on the notebooks
= 1 -
16 =
56 Fraction of remaining money after spending on the pencils
= 1 -
15 =
45 Fraction of what was left after spending on the punchers
= 1 -
34 =
14 Fraction of money that was left =
16 (b)
Amount that Min spent on the pencils = 1 u
Amount that Min spent on the punchers = 3 u
Amount that the punchers cost more than the pencils
= 3 u - 1 u
= 2 u
2 u = 20
1 u = 20 ÷ 2 = 10
Amount that Min had at first
= 6 u
= 6 x 10
= $60
Answer(s): (a)
16; (b) $60
