The ratio of Rael's money to Daniel's money is 7 : 11. If Daniel has $330, how much must he give to Rael so both will have the equal amount of money?
| |
Rael |
Daniel |
Total |
| Before |
7 u |
11 u |
18 u |
| Change |
+ 2 u |
- 2 u |
|
| After |
9 u |
9 u |
18 u |
Comparing Rael and
Daniel in the end |
1 |
1 |
|
Amount that Daniel has at first = 11 u
11 u = 330
1 u = 330 ÷ 11 = 30
Total amount that Daniel and Rael have
= 7 u + 11 u
= 18 u
Amount that each of them will have in the end
= 18 u ÷ 2
= 9 u
Amount that Daniel must give to Rael
= 9 u - 7 u
= 2 u
= 2 x 30
= $60
Answer(s): $60
