Neave and Luis had 87 markers. After Neave gave 18 markers to Luis. Luis, in return, gave half of his markers to Neave. In the end, Neave had twice as many markers as Luis. How many markers did Neave have at first?
| |
Neave |
Luis |
Total |
| Before |
1 u + 18 |
2 u - 18 |
87 |
| Change 1 |
- 18 |
+ 18 |
|
| After 1 |
1 u |
2 u |
|
| Change 2 |
+ 1 u |
- 1 u |
|
| After 2 |
2 u |
1 u |
87 |
Total number of markers that Neave and Luis had at first and in the end remains unchanged.
Total number of markers
= 2 u + 1 u
= 3 u
1 u = 87 ÷ 3 = 29
Number of markers that Neave had at first
= 1 u + 18
= 29 + 18
= 47
Answer(s): 47
