Flynn and Jack had $150 and $106 respectively. Each of them bought a shirt and a sweater at the same price. The cost of the shirt was 4 times as much as the sweater. In the end, Flynn had 5 times as much money as Jack. What was the difference between the cost of the sweater and the shirt?

	Flynn	Jack	Difference
Before	$150	$106	$44
Change	- 5 p	- 5 p
After	5 u	1 u	4 u

Since Flynn and Jack 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 = 150 - 106
4 u = 44

1 u = 44 ÷ 4 = 11

Cost of 1 shirt = 4 p
Cost of 1 sweater = 1 p

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

5 p = 106 - 11
5 p = 95

1 p = 95 ÷ 5 = 19

Difference in the cost between the shirt and the sweater
= 4 p - 1 p
= 3 p
= 3 x 19
= $57

Answer(s): $57