Warren had $302 and Andy had $194 at first. Each of them bought an identical jacket and an identical blouse from the same shop. The blouse cost 4 times as much as the jacket. In the end, Warren had 3 times as much money as Andy. What was the cost of the jacket?

	Warren	Andy	Difference
Before	$302	$194	$108
Change	- 1 jacket - 1 blouse	- 1 jacket - 1 blouse
After	3 u	1 u	2 u

Since Warren and Andy bought the same items, the difference  in their amounts remains the same.

Difference in the amounts that they had
= 3 u - 1 u
= 2 u

2 u = 302 - 194
2 u = 108

1 u = 108 ÷ 2 = 54

Amount that Andy had in the end
= 1 u
= $54

Cost of 1 jacket and 1 blouse
= 194 - 1 u
= 194 - 54
= $140

The blouse cost 4 times as much as the jacket.

Cost of 1 jacket = 1 p
Cost of 1 blouse = 4 p

Total cost of 1 jacket and 1 blouse
= 1 p + 4 p
= 5 p

5 p = 140

1 p = 140 ÷ 5 = 28

Cost of the jacket
= 1 p
= $28

Answer(s): $28