Last week, Bryan had a total of 88 purple and grey markers. Two weeks later, he sold
23 of all the purple markers and 12 grey markers. Now he has the same number of purple and grey markers. How many markers does he have in the end?
| |
Purple |
Grey |
Total |
| Before |
3 u |
1 u + 12 |
4 u + 12 |
| Change |
- 2 u |
- 12 |
|
| After |
1 u |
1 u |
|
Comparing the purple
and grey markers in the end |
1 |
1 |
|
Total number of markers at first
= 3 u + 1 u + 12
= 4 u + 12
4 u + 12 = 88
4 u = 88 - 12
4 u = 76
1 u = 76 ÷ 4 = 19
Number of markers that he has in the end
= 1 u + 1 u
= 2 u
= 2 x 19
= 38
Answer(s): 38
