Last week, Nick had a total of 235 red and pink markers. Two weeks later, he sold
45 of all the red markers and 7 pink markers. Now he has the same number of red and pink markers. How many markers does he have in the end?
| |
Red |
Pink |
Total |
| Before |
5 u |
1 u + 7 |
6 u + 7 |
| Change |
- 4 u |
- 7 |
|
| After |
1 u |
1 u |
|
Comparing the red
and pink markers in the end |
1 |
1 |
|
Total number of markers at first
= 5 u + 1 u + 7
= 6 u + 7
6 u + 7 = 235
6 u = 235 - 7
6 u = 228
1 u = 228 ÷ 6 = 38
Number of markers that he has in the end
= 1 u + 1 u
= 2 u
= 2 x 38
= 76
Answer(s): 76
