Last week, Zane had a total of 166 gold and blue pens. Two weeks later, he sold
34 of all the gold pens and 11 blue pens. Now he has the same number of gold and blue pens. How many pens does he have in the end?
|
Gold |
Blue |
Total |
Before |
4 u |
1 u + 11 |
5 u + 11 |
Change |
- 3 u |
- 11 |
|
After |
1 u |
1 u |
|
Comparing the gold and blue pens in the end |
1 |
1 |
|
Total number of pens at first
= 4 u + 1 u + 11
= 5 u + 11
5 u + 11 = 166
5 u = 166 - 11
5 u = 155
1 u = 155 ÷ 5 = 31
Number of pens that he has in the end
= 1 u + 1 u
= 2 u
= 2 x 31
= 62
Answer(s): 62