The ratio of Flynn's money to Cody's money is 5 : 13. If Cody has $390, how much must he give to Flynn so both will have the equal amount of money?
| |
Flynn |
Cody |
Total |
| Before |
5 u |
13 u |
18 u |
| Change |
+ 4 u |
- 4 u |
|
| After |
9 u |
9 u |
18 u |
Comparing Flynn and
Cody in the end |
1 |
1 |
|
Amount that Cody has at first = 13 u
13 u = 390
1 u = 390 ÷ 13 = 30
Total amount that Cody and Flynn have
= 5 u + 13 u
= 18 u
Amount that each of them will have in the end
= 18 u ÷ 2
= 9 u
Amount that Cody must give to Flynn
= 9 u - 5 u
= 4 u
= 4 x 30
= $120
Answer(s): $120
