The ratio of Howard's money to Oscar's money is 7 : 15. If Oscar has $150, how much must he give to Howard so both will have the equal amount of money?
| |
Howard |
Oscar |
Total |
| Before |
7 u |
15 u |
22 u |
| Change |
+ 4 u |
- 4 u |
|
| After |
11 u |
11 u |
22 u |
Comparing Howard and
Oscar in the end |
1 |
1 |
|
Amount that Oscar has at first = 15 u
15 u = 150
1 u = 150 ÷ 15 = 10
Total amount that Oscar and Howard have
= 7 u + 15 u
= 22 u
Amount that each of them will have in the end
= 22 u ÷ 2
= 11 u
Amount that Oscar must give to Howard
= 11 u - 7 u
= 4 u
= 4 x 10
= $40
Answer(s): $40
