Last week, Nick had a total of 380 yellow and white pens. Two weeks later, he sold
56 of all the yellow pens and 16 white pens. Now he has the same number of yellow and white pens. How many pens does he have in the end?
|
Yellow |
White |
Total |
Before |
6 u |
1 u + 16 |
7 u + 16 |
Change |
- 5 u |
- 16 |
|
After |
1 u |
1 u |
|
Comparing the yellow and white pens in the end |
1 |
1 |
|
Total number of pens at first
= 6 u + 1 u + 16
= 7 u + 16
7 u + 16 = 380
7 u = 380 - 16
7 u = 364
1 u = 364 ÷ 7 = 52
Number of pens that he has in the end
= 1 u + 1 u
= 2 u
= 2 x 52
= 104
Answer(s): 104