Brandon and Charlie had some money at first. Brandon received 2 times as much money as Charlie every month. At the end of 2 months, both of them had the same amount of money. If Charlie had $1280 at first and Brandon had $1920 at the end of those 2 months, what is the ratio of Brandon's money to the total amount of money at first?
| |
Brandon |
Charlie |
| Before |
? |
$1280 |
| Change |
+ 2 u |
+ 1 u |
| After |
$1920 |
$1920 |
Amount that Charlie received every month
= 1920 - 1280
= $640
1 u = 640
Amount that Brandon received every month
= 2 u
= 2 x 640
= $1280
Amount that Brandon had at first
= 1920 - 1280
= $640
Total amount that Brandon and Charlie had at first
= 1280 + 640
= $1920
Brandon's amount : Total amount
640 : 1920
1 : 3
Answer(s): 1 : 3
