The ratio of Ivan's money to Tom's money is 3 : 13. If Tom has $624, how much must he give to Ivan so both will have the equal amount of money?
|
Ivan |
Tom |
Total |
Before |
3 u |
13 u |
16 u |
Change |
+ 5 u |
- 5 u |
|
After |
8 u |
8 u |
16 u |
Comparing Ivan and Tom in the end |
1 |
1 |
|
Amount that Tom has at first = 13 u
13 u = 624
1 u = 624 ÷ 13 = 48
Total amount that Tom and Ivan have
= 3 u + 13 u
= 16 u
Amount that each of them will have in the end
= 16 u ÷ 2
= 8 u
Amount that Tom must give to Ivan
= 8 u - 3 u
= 5 u
= 5 x 48
= $240
Answer(s): $240