The ratio of Jenson's money to Sam's money is 3 : 7. If Sam has $168, how much must he give to Jenson so both will have the equal amount of money?
|
Jenson |
Sam |
Total |
Before |
3 u |
7 u |
10 u |
Change |
+ 2 u |
- 2 u |
|
After |
5 u |
5 u |
10 u |
Comparing Jenson and Sam in the end |
1 |
1 |
|
Amount that Sam has at first = 7 u
7 u = 168
1 u = 168 ÷ 7 = 24
Total amount that Sam and Jenson have
= 3 u + 7 u
= 10 u
Amount that each of them will have in the end
= 10 u ÷ 2
= 5 u
Amount that Sam must give to Jenson
= 5 u - 3 u
= 2 u
= 2 x 24
= $48
Answer(s): $48