Last week, Jenson had a total of 127 silver and purple pens. Two weeks later, he sold
56 of all the silver pens and 29 purple pens. Now he has the same number of silver and purple pens. How many pens does he have in the end?
|
Silver |
Purple |
Total |
Before |
6 u |
1 u + 29 |
7 u + 29 |
Change |
- 5 u |
- 29 |
|
After |
1 u |
1 u |
|
Comparing the silver and purple pens in the end |
1 |
1 |
|
Total number of pens at first
= 6 u + 1 u + 29
= 7 u + 29
7 u + 29 = 127
7 u = 127 - 29
7 u = 98
1 u = 98 ÷ 7 = 14
Number of pens that he has in the end
= 1 u + 1 u
= 2 u
= 2 x 14
= 28
Answer(s): 28