In a shop, the number of markers was
47 of the total number of markers and folders together. Dylan sold the markers and folders in sets of 3 markers and 7 folders. After selling all the folders, he still had 114 markers left. How many folders were in the shop were sold?
|
Markers |
Folders |
Before |
4x7 = 28 u |
3x7 = 21 u |
Change |
- 3x3 = - 9 u |
- 7x3 = - 21 u |
After |
114 |
0 |
Since all the folders were sold, the number of folders at first and the number of folders sold were the same. Make the number of folders at first and sold the same. LCM of 3 and 7 is 21.
Number of markers sold
= 28 u - 9 u
= 19 u
19 u = 114
1 u = 114 ÷ 19 = 6
Number of folders were sold
= 21 u
= 21 x 6
= 126
Answer(s): 126