Last week, Cole had a total of 226 yellow and gold notebooks. Two weeks later, he sold
56 of all the yellow notebooks and 30 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 |
6 u |
1 u + 30 |
7 u + 30 |
| Change |
- 5 u |
- 30 |
|
| After |
1 u |
1 u |
|
Comparing the yellow
and gold notebooks in the end |
1 |
1 |
|
Total number of notebooks at first
= 6 u + 1 u + 30
= 7 u + 30
7 u + 30 = 226
7 u = 226 - 30
7 u = 196
1 u = 196 ÷ 7 = 28
Number of notebooks that he has in the end
= 1 u + 1 u
= 2 u
= 2 x 28
= 56
Answer(s): 56
