Last week, Carl had a total of 300 brown and black markers. Two weeks later, he sold
34 of all the brown markers and 5 black markers. Now he has the same number of brown and black markers. How many markers does he have in the end?
| |
Brown |
Black |
Total |
| Before |
4 u |
1 u + 5 |
5 u + 5 |
| Change |
- 3 u |
- 5 |
|
| After |
1 u |
1 u |
|
Comparing the brown
and black markers in the end |
1 |
1 |
|
Total number of markers at first
= 4 u + 1 u + 5
= 5 u + 5
5 u + 5 = 300
5 u = 300 - 5
5 u = 295
1 u = 295 ÷ 5 = 59
Number of markers that he has in the end
= 1 u + 1 u
= 2 u
= 2 x 59
= 118
Answer(s): 118
