Last week, Glen had a total of 132 green and blue pencils. Two weeks later, he sold
23 of all the green pencils and 4 blue pencils. Now he has the same number of green and blue pencils. How many pencils does he have in the end?
| |
Green |
Blue |
Total |
| Before |
3 u |
1 u + 4 |
4 u + 4 |
| Change |
- 2 u |
- 4 |
|
| After |
1 u |
1 u |
|
Comparing the green
and blue pencils in the end |
1 |
1 |
|
Total number of pencils at first
= 3 u + 1 u + 4
= 4 u + 4
4 u + 4 = 132
4 u = 132 - 4
4 u = 128
1 u = 128 ÷ 4 = 32
Number of pencils that he has in the end
= 1 u + 1 u
= 2 u
= 2 x 32
= 64
Answer(s): 64
