The ratio of Riordan's money to Ivan's money is 5 : 11. If Ivan has $429, how much must he give to Riordan so both will have the equal amount of money?
| |
Riordan |
Ivan |
Total |
| Before |
5 u |
11 u |
16 u |
| Change |
+ 3 u |
- 3 u |
|
| After |
8 u |
8 u |
16 u |
Comparing Riordan and
Ivan in the end |
1 |
1 |
|
Amount that Ivan has at first = 11 u
11 u = 429
1 u = 429 ÷ 11 = 39
Total amount that Ivan and Riordan have
= 5 u + 11 u
= 16 u
Amount that each of them will have in the end
= 16 u ÷ 2
= 8 u
Amount that Ivan must give to Riordan
= 8 u - 5 u
= 3 u
= 3 x 39
= $117
Answer(s): $117
