The ratio of Tommy's money to Will's money is 1 : 5. If Will has $85, how much must he give to Tommy so both will have the equal amount of money?
|
Tommy |
Will |
Total |
Before |
1 u |
5 u |
6 u |
Change |
+ 2 u |
- 2 u |
|
After |
3 u |
3 u |
6 u |
Comparing Tommy and Will in the end |
1 |
1 |
|
Amount that Will has at first = 5 u
5 u = 85
1 u = 85 ÷ 5 = 17
Total amount that Will and Tommy have
= 1 u + 5 u
= 6 u
Amount that each of them will have in the end
= 6 u ÷ 2
= 3 u
Amount that Will must give to Tommy
= 3 u - 1 u
= 2 u
= 2 x 17
= $34
Answer(s): $34