Gem spent
37 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
16 of her remaining money. How many folders did Gem buy altogether?
10 punchers and
2 folders |
Remaining amount |
| 3x3 |
4x3 |
| |
More folders |
Left |
| |
1x2 |
5x2 |
| 9 p |
2 p |
10 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 Gem used to buy more folders
= 2 p
= 2 x 2 u
= 4 u
Number of more folders that Gem bought
= 4 u ÷ 4 u
= 1
Total number of folders that Gem bought
= 2 + 1
= 3
Answer(s): 3
