Lynn spent
35 of her money on 10 punchers and 2 folders. The cost of one folder was four times the cost of one puncher. She bought some more folders with
13 of her remaining money. How many folders did Lynn buy altogether?
10 punchers and
2 folders |
Remaining amount |
| 3x3 |
2x3 |
| |
More folders |
Left |
| |
1x2 |
2x2 |
| 9 p |
2 p |
4 p |
Cost of 1 puncher = 1 u
Cost of 1 folder = 4 u
Cost of 10 punchers = 10 x 1 u = 10 u
Cost of 2 folders = 2 x 4 u = 8 u
Total cost of 10 punchers and 2 folders
= 10 u + 8 u
= 18 u
9 p = 18 u
1 p = 18 ÷ 9 = 2 u
Amount that Lynn used to buy more folders
= 2 p
= 2 x 2 u
= 4 u
Number of more folders that Lynn bought
= 4 u ÷ 4 u
= 1
Total number of folders that Lynn bought
= 2 + 1
= 3
Answer(s): 3
