Billy and Caden had some money at first. Billy received 3 times as much money as Caden every fortnight. At the end of 4 fortnights, both of them had the same amount of money. If Caden had $1440 at first and Billy had $2120 at the end of those 4 fortnights, what is the ratio of Billy's money to the total amount of money at first?
|
Billy |
Caden |
Before |
? |
$1440 |
Change |
+ 3 u |
+ 1 u |
After |
$2120 |
$2120 |
Amount that Caden received every fortnight
= 2120 - 1440
= $680
1 u = 680
Amount that Billy received every fortnight
= 3 u
= 3 x 680
= $2040
Amount that Billy had at first
= 2120 - 2040
= $80
Total amount that Billy and Caden had at first
= 1440 + 80
= $1520
Billy's amount : Total amount
80 : 1520
1 : 19
Answer(s): 1 : 19