The ratio of Rael's money to Brandon's money is 7 : 15. If Brandon has $405, how much must he give to Rael so both will have the equal amount of money?
| |
Rael |
Brandon |
Total |
| Before |
7 u |
15 u |
22 u |
| Change |
+ 4 u |
- 4 u |
|
| After |
11 u |
11 u |
22 u |
Comparing Rael and
Brandon in the end |
1 |
1 |
|
Amount that Brandon has at first = 15 u
15 u = 405
1 u = 405 ÷ 15 = 27
Total amount that Brandon and Rael have
= 7 u + 15 u
= 22 u
Amount that each of them will have in the end
= 22 u ÷ 2
= 11 u
Amount that Brandon must give to Rael
= 11 u - 7 u
= 4 u
= 4 x 27
= $108
Answer(s): $108
