Dylan and Zeph had 57 staplers. After Dylan gave 16 staplers to Zeph. Zeph, in return, gave half of his staplers to Dylan. In the end, Dylan had twice as many staplers as Zeph. How many staplers did Dylan have at first?
| |
Dylan |
Zeph |
Total |
| Before |
1 u + 16 |
2 u - 16 |
57 |
| Change 1 |
- 16 |
+ 16 |
|
| After 1 |
1 u |
2 u |
|
| Change 2 |
+ 1 u |
- 1 u |
|
| After 2 |
2 u |
1 u |
57 |
Total number of staplers that Dylan and Zeph had at first and in the end remains unchanged.
Total number of staplers
= 2 u + 1 u
= 3 u
1 u = 57 ÷ 3 = 19
Number of staplers that Dylan had at first
= 1 u + 16
= 19 + 16
= 35
Answer(s): 35
