Justin and Howard had some money at first. Justin received 2 times as much money as Howard every week. At the end of 2 weeks, both of them had the same amount of money. If Howard had $1020 at first and Justin had $1800 at the end of those 2 weeks, what is the ratio of Justin's money to the total amount of money at first?
| |
Justin |
Howard |
| Before |
? |
$1020 |
| Change |
+ 2 u |
+ 1 u |
| After |
$1800 |
$1800 |
Amount that Howard received every week
= 1800 - 1020
= $780
1 u = 780
Amount that Justin received every week
= 2 u
= 2 x 780
= $1560
Amount that Justin had at first
= 1800 - 1560
= $240
Total amount that Justin and Howard had at first
= 1020 + 240
= $1260
Justin's amount : Total amount
240 : 1260
4 : 21
Answer(s): 4 : 21
