In a stationery shop, the number of notebooks was
711 of the total number of notebooks and files together. Elijah sold the notebooks and files in sets of 4 notebooks and 8 files. After selling all the files, he still had 110 notebooks left. How many files were in the stationery shop were sold?
| |
Notebooks |
Files |
| Before |
7x2 =
14 u |
4x2 =
8 u |
| Change |
- 4x1 =
- 4 u |
- 8x1 =
- 8 u |
| After |
110 |
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 4 and 8 is 8.
Number of notebooks sold
= 14 u - 4 u
= 10 u
10 u = 110
1 u = 110 ÷ 10 = 11
Number of files were sold
= 8 u
= 8 x 11
= 88
Answer(s): 88
