Last week, Sam had a total of 293 brown and white markers. Two weeks later, he sold
45 of all the brown markers and 23 white markers. Now he has the same number of brown and white markers. How many markers does he have in the end?
| |
Brown |
White |
Total |
| Before |
5 u |
1 u + 23 |
6 u + 23 |
| Change |
- 4 u |
- 23 |
|
| After |
1 u |
1 u |
|
Comparing the brown
and white markers in the end |
1 |
1 |
|
Total number of markers at first
= 5 u + 1 u + 23
= 6 u + 23
6 u + 23 = 293
6 u = 293 - 23
6 u = 270
1 u = 270 ÷ 6 = 45
Number of markers that he has in the end
= 1 u + 1 u
= 2 u
= 2 x 45
= 90
Answer(s): 90
