The ratio of Ryan's money to Sam's money is 3 : 11. If Sam has $55, how much must he give to Ryan so both will have the equal amount of money?
| |
Ryan |
Sam |
Total |
| Before |
3 u |
11 u |
14 u |
| Change |
+ 4 u |
- 4 u |
|
| After |
7 u |
7 u |
14 u |
Comparing Ryan and
Sam in the end |
1 |
1 |
|
Amount that Sam has at first = 11 u
11 u = 55
1 u = 55 ÷ 11 = 5
Total amount that Sam and Ryan have
= 3 u + 11 u
= 14 u
Amount that each of them will have in the end
= 14 u ÷ 2
= 7 u
Amount that Sam must give to Ryan
= 7 u - 3 u
= 4 u
= 4 x 5
= $20
Answer(s): $20
