Last week, Riordan had a total of 258 green and purple staplers. Two weeks later, he sold
45 of all the green staplers and 6 purple staplers. Now he has the same number of green and purple staplers. How many staplers does he have in the end?
| |
Green |
Purple |
Total |
| Before |
5 u |
1 u + 6 |
6 u + 6 |
| Change |
- 4 u |
- 6 |
|
| After |
1 u |
1 u |
|
Comparing the green
and purple staplers in the end |
1 |
1 |
|
Total number of staplers at first
= 5 u + 1 u + 6
= 6 u + 6
6 u + 6 = 258
6 u = 258 - 6
6 u = 252
1 u = 252 ÷ 6 = 42
Number of staplers that he has in the end
= 1 u + 1 u
= 2 u
= 2 x 42
= 84
Answer(s): 84
