Tommy and Carl had some money at first. Tommy received 2 times as much money as Carl every day. At the end of 4 days, both of them had the same amount of money. If Carl had $1500 at first and Tommy had $2400 at the end of those 4 days, what is the ratio of Tommy's money to the total amount of money at first?
|
Tommy |
Carl |
Before |
? |
$1500 |
Change |
+ 2 u |
+ 1 u |
After |
$2400 |
$2400 |
Amount that Carl received every day
= 2400 - 1500
= $900
1 u = 900
Amount that Tommy received every day
= 2 u
= 2 x 900
= $1800
Amount that Tommy had at first
= 2400 - 1800
= $600
Total amount that Tommy and Carl had at first
= 1500 + 600
= $2100
Tommy's amount : Total amount
600 : 2100
2 : 7
Answer(s): 2 : 7