Sean and Justin had some money at first. Sean received 4 times as much money as Justin every month. At the end of 4 months, both of them had the same amount of money. If Justin had $1380 at first and Sean had $1740 at the end of those 4 months, what is the ratio of Sean's money to the total amount of money at first?
| |
Sean |
Justin |
| Before |
? |
$1380 |
| Change |
+ 4 u |
+ 1 u |
| After |
$1740 |
$1740 |
Amount that Justin received every month
= 1740 - 1380
= $360
1 u = 360
Amount that Sean received every month
= 4 u
= 4 x 360
= $1440
Amount that Sean had at first
= 1740 - 1440
= $300
Total amount that Sean and Justin had at first
= 1380 + 300
= $1680
Sean's amount : Total amount
300 : 1680
5 : 28
Answer(s): 5 : 28
