Last week, Gabriel had a total of 118 pink and brown pens. Two weeks later, he sold
34 of all the pink pens and 23 brown pens. Now he has the same number of pink and brown pens. How many pens does he have in the end?
| |
Pink |
Brown |
Total |
| Before |
4 u |
1 u + 23 |
5 u + 23 |
| Change |
- 3 u |
- 23 |
|
| After |
1 u |
1 u |
|
Comparing the pink
and brown pens in the end |
1 |
1 |
|
Total number of pens at first
= 4 u + 1 u + 23
= 5 u + 23
5 u + 23 = 118
5 u = 118 - 23
5 u = 95
1 u = 95 ÷ 5 = 19
Number of pens that he has in the end
= 1 u + 1 u
= 2 u
= 2 x 19
= 38
Answer(s): 38
