Glen and Luis had a total of $324. Glen gave $20 to Luis. In return, Luis gave
14 of his money to Glen. In the end, Glen had twice as much money as Luis. How much money did Glen have at first?
| |
Glen |
Luis |
Total |
| Before |
|
|
$324 |
| Change 1 |
- $20 |
+ $20 |
|
| After 1 |
|
4 p |
|
| Change 2 |
+ 1 p |
- 1 p |
|
| After 2 |
|
3 p |
|
Comparing Glen
and Luis
in the end |
2 u |
1 u |
$324 |
The total amount that Luis and Glen had remains unchanged.
Total amount in the end
= 2 u + 1 u
= 3 u
3 u = 324
1 u = 324 ÷ 3 = 108
Amount that Glen has in the end
= 2 u
= 2 x 108
= $216
Amount that Luis has in the end
= 1 u
= $108
3 p = 1 u = 108
1 p = 108 ÷ 3 = 36
Amount that Luis gave to Glen
= 1 p
= 1 x 36
= $36
Amount that Glen had at first
= 216 - 36 + 20
= $200
Answer(s): $200
