The ratio of Liam's money to Oscar's money is 1 : 5. If Oscar has $100, how much must he give to Liam so both will have the equal amount of money?
| |
Liam |
Oscar |
Total |
| Before |
1 u |
5 u |
6 u |
| Change |
+ 2 u |
- 2 u |
|
| After |
3 u |
3 u |
6 u |
Comparing Liam and
Oscar in the end |
1 |
1 |
|
Amount that Oscar has at first = 5 u
5 u = 100
1 u = 100 ÷ 5 = 20
Total amount that Oscar and Liam have
= 1 u + 5 u
= 6 u
Amount that each of them will have in the end
= 6 u ÷ 2
= 3 u
Amount that Oscar must give to Liam
= 3 u - 1 u
= 2 u
= 2 x 20
= $40
Answer(s): $40
