The ratio of Simon's money to Michael's money is 7 : 11. If Michael has $275, how much must he give to Simon so both will have the equal amount of money?
| |
Simon |
Michael |
Total |
| Before |
7 u |
11 u |
18 u |
| Change |
+ 2 u |
- 2 u |
|
| After |
9 u |
9 u |
18 u |
Comparing Simon and
Michael in the end |
1 |
1 |
|
Amount that Michael has at first = 11 u
11 u = 275
1 u = 275 ÷ 11 = 25
Total amount that Michael and Simon have
= 7 u + 11 u
= 18 u
Amount that each of them will have in the end
= 18 u ÷ 2
= 9 u
Amount that Michael must give to Simon
= 9 u - 7 u
= 2 u
= 2 x 25
= $50
Answer(s): $50
