The ratio of Ivan's money to Bobby's money is 9 : 13. If Bobby has $338, how much must he give to Ivan so both will have the equal amount of money?
| |
Ivan |
Bobby |
Total |
| Before |
9 u |
13 u |
22 u |
| Change |
+ 2 u |
- 2 u |
|
| After |
11 u |
11 u |
22 u |
Comparing Ivan and
Bobby in the end |
1 |
1 |
|
Amount that Bobby has at first = 13 u
13 u = 338
1 u = 338 ÷ 13 = 26
Total amount that Bobby and Ivan have
= 9 u + 13 u
= 22 u
Amount that each of them will have in the end
= 22 u ÷ 2
= 11 u
Amount that Bobby must give to Ivan
= 11 u - 9 u
= 2 u
= 2 x 26
= $52
Answer(s): $52
