Archie and Michael had $106 and $66 respectively. Each of them bought a blouse and a jacket at the same price. The cost of the blouse was 3 times as much as the jacket. In the end, Archie had 5 times as much money as Michael. What was the difference between the cost of the jacket and the blouse?

	Archie	Michael	Difference
Before	$106	$66	$40
Change	- 4 p	- 4 p
After	5 u	1 u	4 u

Since Archie and Michael bought the same items at the same price, the difference in the amounts they had remains unchanged at first and in the end.

5 u - 1 u = 106 - 66
4 u = 40

1 u = 40 ÷ 4 = 10

Cost of 1 blouse = 3 p
Cost of 1 jacket = 1 p

Total cost of 1 blouse and 1 jacket
= 3 p + 1 p
= 4 p

4 p = 66 - 10
4 p = 56

1 p = 56 ÷ 4 = 14

Difference in the cost between the blouse and the jacket
= 3 p - 1 p
= 2 p
= 2 x 14
= $28

Answer(s): $28