The ratio of Ken's money to Justin's money is 3 : 13. If Justin has $325, how much must he give to Ken so both will have the equal amount of money?
| |
Ken |
Justin |
Total |
| Before |
3 u |
13 u |
16 u |
| Change |
+ 5 u |
- 5 u |
|
| After |
8 u |
8 u |
16 u |
Comparing Ken and
Justin in the end |
1 |
1 |
|
Amount that Justin has at first = 13 u
13 u = 325
1 u = 325 ÷ 13 = 25
Total amount that Justin and Ken have
= 3 u + 13 u
= 16 u
Amount that each of them will have in the end
= 16 u ÷ 2
= 8 u
Amount that Justin must give to Ken
= 8 u - 3 u
= 5 u
= 5 x 25
= $125
Answer(s): $125
