Last week, Zeph had a total of 278 brown and red markers. Two weeks later, he sold
34 of all the brown markers and 13 red markers. Now he has the same number of brown and red markers. How many markers does he have in the end?
| |
Brown |
Red |
Total |
| Before |
4 u |
1 u + 13 |
5 u + 13 |
| Change |
- 3 u |
- 13 |
|
| After |
1 u |
1 u |
|
Comparing the brown
and red markers in the end |
1 |
1 |
|
Total number of markers at first
= 4 u + 1 u + 13
= 5 u + 13
5 u + 13 = 278
5 u = 278 - 13
5 u = 265
1 u = 265 ÷ 5 = 53
Number of markers that he has in the end
= 1 u + 1 u
= 2 u
= 2 x 53
= 106
Answer(s): 106
