At first, Vincent, Caden and Perry had the same amount of money. After Perry spent some of his money, Vincent spent ²₇ of his money and Caden spent ¹₂ of his money, Vincent had $60 more than Caden. In the end, the total amount of money the three boys had left was $424. How much money did Perry spend?

	Vincent	Caden	Perry	Total
Before	7x2 =  14 u	2x7 = 14 u	14 u
Change	- 2x2 = - 4 u	- 1x7 = - 7 u	- ?
After	5x2 = 10 u	1x7 = 7 u		$424

The amount that Vincent and Caden each had at first is the same.  Make the amount that they each had the same.  LCM of 7 and 2 is 14.

Amount that Vincent had more than Caden in the end
= 10 u - 7 u
= 3 u

3 u = 60

1 u = 60 ÷ 3 = 20

Amount that Vincent and Caden had in the end
= 10 u + 7 u
= 17 u
= 17 x 20
= $340

Amount that Perry had in the end
= 424 - 340
= $84

Amount that Perry had at first
= 14 u
= 14 x 20
= $280

Amount that Perry spent
= 280 - 84
= $196

Answer(s): $196