Gillian spent
25 of her money on 8 punchers and 4 post-it pads. The cost of one post-it pad was twice the cost of one puncher. She bought some more post-it pads with
14 of her remaining money. How many post-it pads did Gillian buy altogether?
8 punchers and
4 post-it pads |
Remaining amount |
| 2x4 |
3x4 |
| |
More post-it pads |
Left |
| |
1x3 |
3x3 |
| 8 p |
3 p |
9 p |
Cost of 1 puncher = 1 u
Cost of 1 post-it pad = 2 u
Cost of 8 punchers = 8 x 1 u = 8 u
Cost of 4 post-it pads = 4 x 2 u = 8 u
Total cost of 8 punchers and 4 post-it pads
= 8 u + 8 u
= 16 u
8 p = 16 u
1 p = 16 ÷ 8 = 2 u
Amount that Gillian used to buy more post-it pads
= 3 p
= 3 x 2 u
= 6 u
Number of more post-it pads that Gillian bought
= 6 u ÷ 2 u
= 3
Total number of post-it pads that Gillian bought
= 4 + 3
= 7
Answer(s): 7
