The ratio of Owen's money to Andy's money is 3 : 7. If Andy has $14, how much must he give to Owen so both will have the equal amount of money?
|
Owen |
Andy |
Total |
Before |
3 u |
7 u |
10 u |
Change |
+ 2 u |
- 2 u |
|
After |
5 u |
5 u |
10 u |
Comparing Owen and Andy in the end |
1 |
1 |
|
Amount that Andy has at first = 7 u
7 u = 14
1 u = 14 ÷ 7 = 2
Total amount that Andy and Owen have
= 3 u + 7 u
= 10 u
Amount that each of them will have in the end
= 10 u ÷ 2
= 5 u
Amount that Andy must give to Owen
= 5 u - 3 u
= 2 u
= 2 x 2
= $4
Answer(s): $4