Last week, Lee had a total of 146 white and brown notebooks. Two weeks later, he sold
45 of all the white notebooks and 14 brown notebooks. Now he has the same number of white and brown notebooks. How many notebooks does he have in the end?
| |
White |
Brown |
Total |
| Before |
5 u |
1 u + 14 |
6 u + 14 |
| Change |
- 4 u |
- 14 |
|
| After |
1 u |
1 u |
|
Comparing the white
and brown notebooks in the end |
1 |
1 |
|
Total number of notebooks at first
= 5 u + 1 u + 14
= 6 u + 14
6 u + 14 = 146
6 u = 146 - 14
6 u = 132
1 u = 132 ÷ 6 = 22
Number of notebooks that he has in the end
= 1 u + 1 u
= 2 u
= 2 x 22
= 44
Answer(s): 44
