Last week, Flynn had a total of 194 green and blue pencils. Two weeks later, he sold
23 of all the green pencils and bought another 18 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 - 18 |
4 u - 18 |
| Change |
- 2 u |
+ 18 |
|
| 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 - 18
= 4 u - 18
4 u - 18 = 194
4 u = 194 + 18
4 u = 212
1 u = 212 ÷ 4 = 53
Number of pencils that he has in the end
= 1 u + 1 u
= 2 u
= 2 x 53
= 106
Answer(s): 106
