The ratio of Justin's money to Bobby's money is 5 : 11. If Bobby has $187, how much must he give to Justin so both will have the equal amount of money?
| |
Justin |
Bobby |
Total |
| Before |
5 u |
11 u |
16 u |
| Change |
+ 3 u |
- 3 u |
|
| After |
8 u |
8 u |
16 u |
Comparing Justin and
Bobby in the end |
1 |
1 |
|
Amount that Bobby has at first = 11 u
11 u = 187
1 u = 187 ÷ 11 = 17
Total amount that Bobby and Justin have
= 5 u + 11 u
= 16 u
Amount that each of them will have in the end
= 16 u ÷ 2
= 8 u
Amount that Bobby must give to Justin
= 8 u - 5 u
= 3 u
= 3 x 17
= $51
Answer(s): $51
