Last week, Tom had a total of 256 pink and white staplers. Two weeks later, he sold
34 of all the pink staplers and bought another 24 white staplers. Now he has the same number of pink and white staplers. How many staplers does he have in the end?
| |
Pink |
White |
Total |
| Before |
4 u |
1 u - 24 |
5 u - 24 |
| Change |
- 3 u |
+ 24 |
|
| After |
1 u |
1 u |
|
Comparing the pink
and white staplers in the end |
1 |
1 |
|
Total number of staplers at first
= 4 u + 1 u - 24
= 5 u - 24
5 u - 24 = 256
5 u = 256 + 24
5 u = 280
1 u = 280 ÷ 5 = 56
Number of staplers that he has in the end
= 1 u + 1 u
= 2 u
= 2 x 56
= 112
Answer(s): 112
