The ratio of Bobby's money to Elijah's money is 1 : 5. If Elijah has $45, how much must he give to Bobby so both will have the equal amount of money?
| |
Bobby |
Elijah |
Total |
| Before |
1 u |
5 u |
6 u |
| Change |
+ 2 u |
- 2 u |
|
| After |
3 u |
3 u |
6 u |
Comparing Bobby and
Elijah in the end |
1 |
1 |
|
Amount that Elijah has at first = 5 u
5 u = 45
1 u = 45 ÷ 5 = 9
Total amount that Elijah and Bobby have
= 1 u + 5 u
= 6 u
Amount that each of them will have in the end
= 6 u ÷ 2
= 3 u
Amount that Elijah must give to Bobby
= 3 u - 1 u
= 2 u
= 2 x 9
= $18
Answer(s): $18
