The ratio of Ryan's money to Warren's money is 5 : 9. If Warren has $99, how much must he give to Ryan so both will have the equal amount of money?
| |
Ryan |
Warren |
Total |
| Before |
5 u |
9 u |
14 u |
| Change |
+ 2 u |
- 2 u |
|
| After |
7 u |
7 u |
14 u |
Comparing Ryan and
Warren in the end |
1 |
1 |
|
Amount that Warren has at first = 9 u
9 u = 99
1 u = 99 ÷ 9 = 11
Total amount that Warren and Ryan have
= 5 u + 9 u
= 14 u
Amount that each of them will have in the end
= 14 u ÷ 2
= 7 u
Amount that Warren must give to Ryan
= 7 u - 5 u
= 2 u
= 2 x 11
= $22
Answer(s): $22
