Elyse spent
27 of her money on 2 post-it pads and 5 files. The cost of one file was twice the cost of one post-it pad. She bought some more files with
13 of her remaining money. How many files did Elyse buy altogether?
2 post-it pads and
5 files |
Remaining amount |
| 2x3 |
5x3 |
| |
More files |
Left |
| |
1x5 |
2x5 |
| 6 p |
5 p |
10 p |
Cost of 1 post-it pad = 1 u
Cost of 1 file = 2 u
Cost of 2 post-it pads = 2 x 1 u = 2 u
Cost of 5 files = 5 x 2 u = 10 u
Total cost of 2 post-it pads and 5 files
= 2 u + 10 u
= 12 u
6 p = 12 u
1 p = 12 ÷ 6 = 2 u
Amount that Elyse used to buy more files
= 5 p
= 5 x 2 u
= 10 u
Number of more files that Elyse bought
= 10 u ÷ 2 u
= 5
Total number of files that Elyse bought
= 5 + 5
= 10
Answer(s): 10
