Brandon and Julian had 78 notebooks. After Brandon gave 23 notebooks to Julian. Julian, in return, gave half of his notebooks to Brandon. In the end, Brandon had twice as many notebooks as Julian. How many notebooks did Brandon have at first?
| |
Brandon |
Julian |
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 notebooks that Brandon and Julian had at first and in the end remains unchanged.
Total number of notebooks
= 2 u + 1 u
= 3 u
1 u = 78 ÷ 3 = 26
Number of notebooks that Brandon had at first
= 1 u + 23
= 26 + 23
= 49
Answer(s): 49
