At first, Asher, Vincent and Ryan had the same amount of money. After Ryan spent some of his money, Asher spent ³₈ of his money and Vincent spent ²₃ of his money, Asher had $70 more than Vincent. In the end, the total amount of money the three boys had left was $330. How much money did Ryan spend?

	Asher	Vincent	Ryan	Total
Before	8x3 =  24 u	3x8 = 24 u	24 u
Change	- 3x3 = - 9 u	- 2x8 = - 16 u	- ?
After	5x3 = 15 u	1x8 = 8 u		$330

The amount that Asher and Vincent each had at first is the same.  Make the amount that they each had the same.  LCM of 8 and 3 is 24.

Amount that Asher had more than Vincent in the end
= 15 u - 8 u
= 7 u

7 u = 70

1 u = 70 ÷ 7 = 10

Amount that Asher and Vincent had in the end
= 15 u + 8 u
= 23 u
= 23 x 10
= $230

Amount that Ryan had in the end
= 330 - 230
= $100

Amount that Ryan had at first
= 24 u
= 24 x 10
= $240

Amount that Ryan spent
= 240 - 100
= $140

Answer(s): $140