Elijah and Howard had $155 and $131 respectively. Each of them bought a shirt and a blouse at the same price. The cost of the shirt was 4 times as much as the blouse. In the end, Elijah had 5 times as much money as Howard. What was the difference between the cost of the blouse and the shirt?

	Elijah	Howard	Difference
Before	$155	$131	$24
Change	- 5 p	- 5 p
After	5 u	1 u	4 u

Since Elijah and Howard 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 = 155 - 131
4 u = 24

1 u = 24 ÷ 4 = 6

Cost of 1 shirt = 4 p
Cost of 1 blouse = 1 p

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

5 p = 131 - 6
5 p = 125

1 p = 125 ÷ 5 = 25

Difference in the cost between the shirt and the blouse
= 4 p - 1 p
= 3 p
= 3 x 25
= $75

Answer(s): $75