The ratio of Charlie's money to Zane's money is 3 : 7. If Zane has $175, how much must he give to Charlie so both will have the equal amount of money?
| |
Charlie |
Zane |
Total |
| Before |
3 u |
7 u |
10 u |
| Change |
+ 2 u |
- 2 u |
|
| After |
5 u |
5 u |
10 u |
Comparing Charlie and
Zane in the end |
1 |
1 |
|
Amount that Zane has at first = 7 u
7 u = 175
1 u = 175 ÷ 7 = 25
Total amount that Zane and Charlie have
= 3 u + 7 u
= 10 u
Amount that each of them will have in the end
= 10 u ÷ 2
= 5 u
Amount that Zane must give to Charlie
= 5 u - 3 u
= 2 u
= 2 x 25
= $50
Answer(s): $50
