The ratio of Andy's money to Albert's money is 7 : 11. If Albert has $286, how much must he give to Andy so both will have the equal amount of money?
| |
Andy |
Albert |
Total |
| Before |
7 u |
11 u |
18 u |
| Change |
+ 2 u |
- 2 u |
|
| After |
9 u |
9 u |
18 u |
Comparing Andy and
Albert in the end |
1 |
1 |
|
Amount that Albert has at first = 11 u
11 u = 286
1 u = 286 ÷ 11 = 26
Total amount that Albert and Andy have
= 7 u + 11 u
= 18 u
Amount that each of them will have in the end
= 18 u ÷ 2
= 9 u
Amount that Albert must give to Andy
= 9 u - 7 u
= 2 u
= 2 x 26
= $52
Answer(s): $52
