The ratio of Sean's money to Oscar's money is 5 : 13. If Oscar has $260, how much must he give to Sean so both will have the equal amount of money?
|
Sean |
Oscar |
Total |
Before |
5 u |
13 u |
18 u |
Change |
+ 4 u |
- 4 u |
|
After |
9 u |
9 u |
18 u |
Comparing Sean and Oscar in the end |
1 |
1 |
|
Amount that Oscar has at first = 13 u
13 u = 260
1 u = 260 ÷ 13 = 20
Total amount that Oscar and Sean have
= 5 u + 13 u
= 18 u
Amount that each of them will have in the end
= 18 u ÷ 2
= 9 u
Amount that Oscar must give to Sean
= 9 u - 5 u
= 4 u
= 4 x 20
= $80
Answer(s): $80