Last week, Justin had a total of 158 gold and green markers. Two weeks later, he sold
45 of all the gold markers and bought another 22 green markers. Now he has the same number of gold and green markers. How many markers does he have in the end?
| |
Gold |
Green |
Total |
| Before |
5 u |
1 u - 22 |
6 u - 22 |
| Change |
- 4 u |
+ 22 |
|
| After |
1 u |
1 u |
|
Comparing the gold
and green markers in the end |
1 |
1 |
|
Total number of markers at first
= 5 u + 1 u - 22
= 6 u - 22
6 u - 22 = 158
6 u = 158 + 22
6 u = 180
1 u = 180 ÷ 6 = 30
Number of markers that he has in the end
= 1 u + 1 u
= 2 u
= 2 x 30
= 60
Answer(s): 60
