The ratio of Julian's money to Eric's money is 3 : 7. If Eric has $231, how much must he give to Julian so both will have the equal amount of money?
| |
Julian |
Eric |
Total |
| Before |
3 u |
7 u |
10 u |
| Change |
+ 2 u |
- 2 u |
|
| After |
5 u |
5 u |
10 u |
Comparing Julian and
Eric in the end |
1 |
1 |
|
Amount that Eric has at first = 7 u
7 u = 231
1 u = 231 ÷ 7 = 33
Total amount that Eric and Julian have
= 3 u + 7 u
= 10 u
Amount that each of them will have in the end
= 10 u ÷ 2
= 5 u
Amount that Eric must give to Julian
= 5 u - 3 u
= 2 u
= 2 x 33
= $66
Answer(s): $66
