Last week, Daniel had a total of 118 gold and black markers. Two weeks later, he sold
34 of all the gold markers and bought another 27 black markers. Now he has the same number of gold and black markers. How many markers does he have in the end?
| |
Gold |
Black |
Total |
| Before |
4 u |
1 u - 27 |
5 u - 27 |
| Change |
- 3 u |
+ 27 |
|
| After |
1 u |
1 u |
|
Comparing the gold
and black markers in the end |
1 |
1 |
|
Total number of markers at first
= 4 u + 1 u - 27
= 5 u - 27
5 u - 27 = 118
5 u = 118 + 27
5 u = 145
1 u = 145 ÷ 5 = 29
Number of markers that he has in the end
= 1 u + 1 u
= 2 u
= 2 x 29
= 58
Answer(s): 58
