In a store, the number of correction tapes was
12 of the total number of correction tapes and notebooks together. Seth sold the correction tapes and notebooks in sets of 4 correction tapes and 8 notebooks. After selling all the notebooks, he still had 28 correction tapes left. How many notebooks were in the store were sold?
| |
Correction Tapes |
Notebooks |
| Before |
1x8 =
8 u |
1x8 =
8 u |
| Change |
- 4x1 =
- 4 u |
- 8x1 =
- 8 u |
| After |
28 |
0 |
Since all the notebooks were sold, the number of notebooks at first and the number of notebooks sold were the same. Make the number of notebooks at first and sold the same. LCM of 1 and 8 is 8.
Number of correction tapes sold
= 8 u - 4 u
= 4 u
4 u = 28
1 u = 28 ÷ 4 = 7
Number of notebooks were sold
= 8 u
= 8 x 7
= 56
Answer(s): 56
