Rael and Paul had 87 markers. After Rael gave 15 markers to Paul. Paul, in return, gave half of his markers to Rael. In the end, Rael had twice as many markers as Paul. How many markers did Rael have at first?
| |
Rael |
Paul |
Total |
| Before |
1 u + 15 |
2 u - 15 |
87 |
| Change 1 |
- 15 |
+ 15 |
|
| After 1 |
1 u |
2 u |
|
| Change 2 |
+ 1 u |
- 1 u |
|
| After 2 |
2 u |
1 u |
87 |
Total number of markers that Rael and Paul 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 Rael had at first
= 1 u + 15
= 29 + 15
= 44
Answer(s): 44
