Billy and Jack had some money at first. Billy received 3 times as much money as Jack every day. At the end of 2 days, both of them had the same amount of money. If Jack had $1440 at first and Billy had $1800 at the end of those 2 days, what is the ratio of Billy's money to the total amount of money at first?
| |
Billy |
Jack |
| Before |
? |
$1440 |
| Change |
+ 3 u |
+ 1 u |
| After |
$1800 |
$1800 |
Amount that Jack received every day
= 1800 - 1440
= $360
1 u = 360
Amount that Billy received every day
= 3 u
= 3 x 360
= $1080
Amount that Billy had at first
= 1800 - 1080
= $720
Total amount that Billy and Jack had at first
= 1440 + 720
= $2160
Billy's amount : Total amount
720 : 2160
1 : 3
Answer(s): 1 : 3
