Last week, Cole had a total of 74 blue and gold markers. Two weeks later, he sold
23 of all the blue markers and 18 gold markers. Now he has the same number of blue and gold markers. How many markers does he have in the end?
|
Blue |
Gold |
Total |
Before |
3 u |
1 u + 18 |
4 u + 18 |
Change |
- 2 u |
- 18 |
|
After |
1 u |
1 u |
|
Comparing the blue and gold markers in the end |
1 |
1 |
|
Total number of markers at first
= 3 u + 1 u + 18
= 4 u + 18
4 u + 18 = 74
4 u = 74 - 18
4 u = 56
1 u = 56 ÷ 4 = 14
Number of markers that he has in the end
= 1 u + 1 u
= 2 u
= 2 x 14
= 28
Answer(s): 28