The ratio of Fred's money to Charlie's money is 5 : 13. If Charlie has $559, how much must he give to Fred so both will have the equal amount of money?
| |
Fred |
Charlie |
Total |
| Before |
5 u |
13 u |
18 u |
| Change |
+ 4 u |
- 4 u |
|
| After |
9 u |
9 u |
18 u |
Comparing Fred and
Charlie in the end |
1 |
1 |
|
Amount that Charlie has at first = 13 u
13 u = 559
1 u = 559 ÷ 13 = 43
Total amount that Charlie and Fred have
= 5 u + 13 u
= 18 u
Amount that each of them will have in the end
= 18 u ÷ 2
= 9 u
Amount that Charlie must give to Fred
= 9 u - 5 u
= 4 u
= 4 x 43
= $172
Answer(s): $172
