Howard and Jeremy had 60 notebooks. After Howard gave 15 notebooks to Jeremy. Jeremy, in return, gave half of his notebooks to Howard. In the end, Howard had twice as many notebooks as Jeremy. How many notebooks did Howard have at first?
| |
Howard |
Jeremy |
Total |
| Before |
1 u + 15 |
2 u - 15 |
60 |
| Change 1 |
- 15 |
+ 15 |
|
| After 1 |
1 u |
2 u |
|
| Change 2 |
+ 1 u |
- 1 u |
|
| After 2 |
2 u |
1 u |
60 |
Total number of notebooks that Howard and Jeremy had at first and in the end remains unchanged.
Total number of notebooks
= 2 u + 1 u
= 3 u
1 u = 60 ÷ 3 = 20
Number of notebooks that Howard had at first
= 1 u + 15
= 20 + 15
= 35
Answer(s): 35
