Last week, Ben had a total of 313 white and purple staplers. Two weeks later, he sold
34 of all the white staplers and 23 purple staplers. Now he has the same number of white and purple staplers. How many staplers does he have in the end?
| |
White |
Purple |
Total |
| Before |
4 u |
1 u + 23 |
5 u + 23 |
| Change |
- 3 u |
- 23 |
|
| After |
1 u |
1 u |
|
Comparing the white
and purple staplers in the end |
1 |
1 |
|
Total number of staplers at first
= 4 u + 1 u + 23
= 5 u + 23
5 u + 23 = 313
5 u = 313 - 23
5 u = 290
1 u = 290 ÷ 5 = 58
Number of staplers that he has in the end
= 1 u + 1 u
= 2 u
= 2 x 58
= 116
Answer(s): 116
