The ratio of Ivan's money to Reggie's money is 5 : 13. If Reggie has $650, how much must he give to Ivan so both will have the equal amount of money?
|
Ivan |
Reggie |
Total |
Before |
5 u |
13 u |
18 u |
Change |
+ 4 u |
- 4 u |
|
After |
9 u |
9 u |
18 u |
Comparing Ivan and Reggie in the end |
1 |
1 |
|
Amount that Reggie has at first = 13 u
13 u = 650
1 u = 650 ÷ 13 = 50
Total amount that Reggie and Ivan have
= 5 u + 13 u
= 18 u
Amount that each of them will have in the end
= 18 u ÷ 2
= 9 u
Amount that Reggie must give to Ivan
= 9 u - 5 u
= 4 u
= 4 x 50
= $200
Answer(s): $200