Daniel and Nick had 78 staplers. After Daniel gave 11 staplers to Nick. Nick, in return, gave half of his staplers to Daniel. In the end, Daniel had twice as many staplers as Nick. How many staplers did Daniel have at first?
| |
Daniel |
Nick |
Total |
| Before |
1 u + 11 |
2 u - 11 |
78 |
| Change 1 |
- 11 |
+ 11 |
|
| After 1 |
1 u |
2 u |
|
| Change 2 |
+ 1 u |
- 1 u |
|
| After 2 |
2 u |
1 u |
78 |
Total number of staplers that Daniel and Nick had at first and in the end remains unchanged.
Total number of staplers
= 2 u + 1 u
= 3 u
1 u = 78 ÷ 3 = 26
Number of staplers that Daniel had at first
= 1 u + 11
= 26 + 11
= 37
Answer(s): 37
