Vaidev and Will had $140 and $68 respectively. Each of them bought a jacket and a blouse at the same price. The cost of the jacket was 4 times as much as the blouse. In the end, Vaidev had 5 times as much money as Will. What was the difference between the cost of the blouse and the jacket?

	Vaidev	Will	Difference
Before	$140	$68	$72
Change	- 5 p	- 5 p
After	5 u	1 u	4 u

Since Vaidev and Will 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 = 140 - 68
4 u = 72

1 u = 72 ÷ 4 = 18

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

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

5 p = 68 - 18
5 p = 50

1 p = 50 ÷ 5 = 10

Difference in the cost between the jacket and the blouse
= 4 p - 1 p
= 3 p
= 3 x 10
= $30

Answer(s): $30