Last week, Rael had a total of 57 red and purple markers. Two weeks later, he sold
34 of all the red markers and bought another 8 purple markers. Now he has the same number of red and purple markers. How many markers does he have in the end?
| |
Red |
Purple |
Total |
| Before |
4 u |
1 u - 8 |
5 u - 8 |
| Change |
- 3 u |
+ 8 |
|
| After |
1 u |
1 u |
|
Comparing the red
and purple markers in the end |
1 |
1 |
|
Total number of markers at first
= 4 u + 1 u - 8
= 5 u - 8
5 u - 8 = 57
5 u = 57 + 8
5 u = 65
1 u = 65 ÷ 5 = 13
Number of markers that he has in the end
= 1 u + 1 u
= 2 u
= 2 x 13
= 26
Answer(s): 26
