The ratio of Albert's money to Sam's money is 1 : 7. If Sam has $126, how much must he give to Albert so both will have the equal amount of money?
| |
Albert |
Sam |
Total |
| Before |
1 u |
7 u |
8 u |
| Change |
+ 3 u |
- 3 u |
|
| After |
4 u |
4 u |
8 u |
Comparing Albert and
Sam in the end |
1 |
1 |
|
Amount that Sam has at first = 7 u
7 u = 126
1 u = 126 ÷ 7 = 18
Total amount that Sam and Albert have
= 1 u + 7 u
= 8 u
Amount that each of them will have in the end
= 8 u ÷ 2
= 4 u
Amount that Sam must give to Albert
= 4 u - 1 u
= 3 u
= 3 x 18
= $54
Answer(s): $54
