Last week, Glen had a total of 301 green and brown pencils. Two weeks later, he sold
45 of all the green pencils and bought another 11 brown pencils. Now he has the same number of green and brown pencils. How many pencils does he have in the end?
| |
Green |
Brown |
Total |
| Before |
5 u |
1 u - 11 |
6 u - 11 |
| Change |
- 4 u |
+ 11 |
|
| After |
1 u |
1 u |
|
Comparing the green
and brown pencils in the end |
1 |
1 |
|
Total number of pencils at first
= 5 u + 1 u - 11
= 6 u - 11
6 u - 11 = 301
6 u = 301 + 11
6 u = 312
1 u = 312 ÷ 6 = 52
Number of pencils that he has in the end
= 1 u + 1 u
= 2 u
= 2 x 52
= 104
Answer(s): 104
