The ratio of Pierre's money to Oscar's money is 11 : 15. If Oscar has $105, how much must he give to Pierre so both will have the equal amount of money?
| |
Pierre |
Oscar |
Total |
| Before |
11 u |
15 u |
26 u |
| Change |
+ 2 u |
- 2 u |
|
| After |
13 u |
13 u |
26 u |
Comparing Pierre and
Oscar in the end |
1 |
1 |
|
Amount that Oscar has at first = 15 u
15 u = 105
1 u = 105 ÷ 15 = 7
Total amount that Oscar and Pierre have
= 11 u + 15 u
= 26 u
Amount that each of them will have in the end
= 26 u ÷ 2
= 13 u
Amount that Oscar must give to Pierre
= 13 u - 11 u
= 2 u
= 2 x 7
= $14
Answer(s): $14
