The ratio of Mark's money to Albert's money is 5 : 9. If Albert has $162, how much must he give to Mark so both will have the equal amount of money?
| |
Mark |
Albert |
Total |
| Before |
5 u |
9 u |
14 u |
| Change |
+ 2 u |
- 2 u |
|
| After |
7 u |
7 u |
14 u |
Comparing Mark and
Albert in the end |
1 |
1 |
|
Amount that Albert has at first = 9 u
9 u = 162
1 u = 162 ÷ 9 = 18
Total amount that Albert and Mark have
= 5 u + 9 u
= 14 u
Amount that each of them will have in the end
= 14 u ÷ 2
= 7 u
Amount that Albert must give to Mark
= 7 u - 5 u
= 2 u
= 2 x 18
= $36
Answer(s): $36
