In a book shop, the number of staplers was
23 of the total number of staplers and files together. Cody sold the staplers and files in sets of 1 stapler and 4 files. After selling all the files, he still had 14 staplers left. How many files were in the book shop at first?
| |
Staplers |
Files |
| Before |
2x4 =
8 u |
1x4 =
4 u |
| Change |
- 1x1 =
- 1 u |
- 4x1 =
- 4 u |
| After |
14 |
0 |
Since all the files were sold, the number of files at first and the number of files sold were the same. Make the number of files at first and sold the same. LCM of 1 and 4 is 4.
Number of staplers sold
= 8 u - 1 u
= 7 u
7 u = 14
1 u = 14 ÷ 7 = 2
Number of files at first
= 4 u
= 4 x 2
= 8
Answer(s): 8
