Ryan and Tom had some money at first. Ryan received 2 times as much money as Tom every month. At the end of 4 months, both of them had the same amount of money. If Tom had $1200 at first and Ryan had $2080 at the end of those 4 months, what is the ratio of Ryan's money to the total amount of money at first?
| |
Ryan |
Tom |
| Before |
? |
$1200 |
| Change |
+ 2 u |
+ 1 u |
| After |
$2080 |
$2080 |
Amount that Tom received every month
= 2080 - 1200
= $880
1 u = 880
Amount that Ryan received every month
= 2 u
= 2 x 880
= $1760
Amount that Ryan had at first
= 2080 - 1760
= $320
Total amount that Ryan and Tom had at first
= 1200 + 320
= $1520
Ryan's amount : Total amount
320 : 1520
4 : 19
Answer(s): 4 : 19
