Seth, Jack, Oliver and Oscar shared $125. Oscar received ²₃ of the total amount of money received by Seth, Jack and Oliver. Seth received ¹₄ of the total amount for Jack and Oliver. Jack received ¹₂ as much money as Oliver. If Oliver gave all his money to Oscar, how much did Oscar have more than Jack in the end?

Seth	Jack	Oliver	Oscar	Total
3x5			2x5	5x5
1x3	4x3
	1x4	2x4
3 u	4 u	8 u	10 u	25 u

The total amount that Jack and Oliver have is repeated.  Make the total amount of Jack and Oliver the same.  LCM of 3 and 4 is 12.

The total amount that Seth, Jack and Oliver have is repeated.  Make the total amount of Seth, Jack and Oliver the same. LCM of 15 and 3 is 15.

Total amount that Seth, Jack, Oliver and Oscar shared = 25 u

25 u = 125

1 u = 125 ÷ 25 = 5

	Seth	Jack	Oliver	Oscar
Before	3 u	4 u	8 u	10 u
Change			- 8 u	+ 8 u
After	3 u	4 u	0 u	18 u

Amount that Oscar had if Oliver gave him all his money
= 10 u + 8 u
= 18 u

Amount that Oscar had more than Jack
= 18 u - 4 u
= 14 u
= 14 x 5
= $70

Answer(s): $70