The ratio of Lee's money to Dylan's money is 7 : 11. If Dylan has $77, how much must he give to Lee so both will have the equal amount of money?
| |
Lee |
Dylan |
Total |
| Before |
7 u |
11 u |
18 u |
| Change |
+ 2 u |
- 2 u |
|
| After |
9 u |
9 u |
18 u |
Comparing Lee and
Dylan in the end |
1 |
1 |
|
Amount that Dylan has at first = 11 u
11 u = 77
1 u = 77 ÷ 11 = 7
Total amount that Dylan and Lee have
= 7 u + 11 u
= 18 u
Amount that each of them will have in the end
= 18 u ÷ 2
= 9 u
Amount that Dylan must give to Lee
= 9 u - 7 u
= 2 u
= 2 x 7
= $14
Answer(s): $14
