Last week, Albert had a total of 29 yellow and gold notebooks. Two weeks later, he sold
34 of all the yellow notebooks and bought another 26 gold notebooks. Now he has the same number of yellow and gold notebooks. How many notebooks does he have in the end?
| |
Yellow |
Gold |
Total |
| Before |
4 u |
1 u - 26 |
5 u - 26 |
| Change |
- 3 u |
+ 26 |
|
| After |
1 u |
1 u |
|
Comparing the yellow
and gold notebooks in the end |
1 |
1 |
|
Total number of notebooks at first
= 4 u + 1 u - 26
= 5 u - 26
5 u - 26 = 29
5 u = 29 + 26
5 u = 55
1 u = 55 ÷ 5 = 11
Number of notebooks that he has in the end
= 1 u + 1 u
= 2 u
= 2 x 11
= 22
Answer(s): 22
