The ratio of Zane's money to Sean's money is 1 : 7. If Sean has $28, how much must he give to Zane so both will have the equal amount of money?
| |
Zane |
Sean |
Total |
| Before |
1 u |
7 u |
8 u |
| Change |
+ 3 u |
- 3 u |
|
| After |
4 u |
4 u |
8 u |
Comparing Zane and
Sean in the end |
1 |
1 |
|
Amount that Sean has at first = 7 u
7 u = 28
1 u = 28 ÷ 7 = 4
Total amount that Sean and Zane have
= 1 u + 7 u
= 8 u
Amount that each of them will have in the end
= 8 u ÷ 2
= 4 u
Amount that Sean must give to Zane
= 4 u - 1 u
= 3 u
= 3 x 4
= $12
Answer(s): $12
