Tim and George had $135 and $125 respectively. Each of them bought a skirt and a hoodie at the same price. The cost of the skirt was 4 times as much as the hoodie. In the end, Tim had 3 times as much money as George. What was the difference between the cost of the hoodie and the skirt?

	Tim	George	Difference
Before	$135	$125	$10
Change	- 5 p	- 5 p
After	3 u	1 u	2 u

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

3 u - 1 u = 135 - 125
2 u = 10

1 u = 10 ÷ 2 = 5

Cost of 1 skirt = 4 p
Cost of 1 hoodie = 1 p

Total cost of 1 skirt and 1 hoodie
= 4 p + 1 p
= 5 p

5 p = 125 - 5
5 p = 120

1 p = 120 ÷ 5 = 24

Difference in the cost between the skirt and the hoodie
= 4 p - 1 p
= 3 p
= 3 x 24
= $72

Answer(s): $72