Elijah, Charlie and Zeph shared $550. During a shopping trip, Elijah spent ³₈ of his share, Charlie spent ²₅ of his share and Zeph spent ¹₄ of his share. Given that all three boys each spent the same amount of money, how much more money do Elijah and Charlie have than Zeph in the end?

	Elijah	Charlie	Zeph	Total
Before	8x2 = 16 u	5x3 = 15 u	4x6 = 24 u	$550
Change	- 3x2 = - 6 u	- 2x3 = - 6 u	- 1x6 = - 6 u
After	5x2 = 10 u	3x3 = 9 u	3x6 = 18 u

The amounts that Elijah, Charlie and Zeph spent is the same.  Make the amounts that each boy spent the same. LCM of 3, 2 and 1 is 6.

Amounts that the 3 boys had at first
= 16 u + 15 u + 24 u
= 55 u

55 u = 550

1 u = 550 ÷ 55 = 10

Amount that Elijah and Charlie have in the end
= 10 u + 9 u
= 19 u

Amount that Elijah and Charlie have more than Zeph in the end
= 19 u - 18 u
= 1 u
= 1 x 10
= $10

Answer(s): $10