The ratio of Fabian's money to Peter's money is 3 : 7. If Peter has $210, how much must he give to Fabian so both will have the equal amount of money?
| |
Fabian |
Peter |
Total |
| Before |
3 u |
7 u |
10 u |
| Change |
+ 2 u |
- 2 u |
|
| After |
5 u |
5 u |
10 u |
Comparing Fabian and
Peter in the end |
1 |
1 |
|
Amount that Peter has at first = 7 u
7 u = 210
1 u = 210 ÷ 7 = 30
Total amount that Peter and Fabian have
= 3 u + 7 u
= 10 u
Amount that each of them will have in the end
= 10 u ÷ 2
= 5 u
Amount that Peter must give to Fabian
= 5 u - 3 u
= 2 u
= 2 x 30
= $60
Answer(s): $60
