Last week, Billy had a total of 224 gold and purple staplers. Two weeks later, he sold
23 of all the gold staplers and 8 purple staplers. Now he has the same number of gold and purple staplers. How many staplers does he have in the end?
| |
Gold |
Purple |
Total |
| Before |
3 u |
1 u + 8 |
4 u + 8 |
| Change |
- 2 u |
- 8 |
|
| After |
1 u |
1 u |
|
Comparing the gold
and purple staplers in the end |
1 |
1 |
|
Total number of staplers at first
= 3 u + 1 u + 8
= 4 u + 8
4 u + 8 = 224
4 u = 224 - 8
4 u = 216
1 u = 216 ÷ 4 = 54
Number of staplers that he has in the end
= 1 u + 1 u
= 2 u
= 2 x 54
= 108
Answer(s): 108
