Zane and Ethan had 78 staplers. After Zane gave 23 staplers to Ethan. Ethan, in return, gave half of his staplers to Zane. In the end, Zane had twice as many staplers as Ethan. How many staplers did Zane have at first?
| |
Zane |
Ethan |
Total |
| Before |
1 u + 23 |
2 u - 23 |
78 |
| Change 1 |
- 23 |
+ 23 |
|
| After 1 |
1 u |
2 u |
|
| Change 2 |
+ 1 u |
- 1 u |
|
| After 2 |
2 u |
1 u |
78 |
Total number of staplers that Zane and Ethan 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 Zane had at first
= 1 u + 23
= 26 + 23
= 49
Answer(s): 49
