Perry and Xavier went shopping with a total amount of $336. They had $280 left after shopping. Perry's remaining money was 4 times the amount he paid for. Xavier's remaining money was 6 times the amount he had spent.

1. How much did Xavier spend?
2. How much did Xavier bring along for shopping?

	Perry	Xavier	Total
Before	5 u	7 p	336
Change	- 1 u	- 1 p	- 56
After	4 u	6 p	280

(a)
Amount that Perry and Xavier spent
= 336 - 280
= $56

Amount that Perry and Xavier spent
= 1 u + 1 p

1 u + 1 p = 56
1 u = 56 - 1 p --- (1)

Amount that Perry and Xavier had left
= 4 u + 6 p 

4 u + 6 p = 280
4 u = 280 - 6 p --- (2)

Make u the same.

(1) _{x 4}
4 u = 224 - 4 p --- (3)

(3) = (2)
224 - 4 p = 280 - 6 p 
6 p - 4 p = 280 - 224

2 p = 56

1 p = 56 ÷ 2 = 28

Amount that Xavier spent = $28

(b)
Amount that Xavier brought along
= 7 p
= 7 x 28
= $196

Answer(s): (a) $28; (b) $196