Reggie buys a vest, a windbreaker and a jacket. The average cost of these items is $87. The cost of the jacket is four times the total cost of the vest and the windbreaker. If the vest costs $29, find the difference in cost between the windbreaker and the jacket.
Total cost of the 3 items
= 3 x 87
= $261

Total cost of the vest and the windbreaker = 1 u
Cost of the jacket = 4 u

Total cost of the 3 items 
= 1 u + 4 u
= 5 u

5 u = 261 

1 u = 261 ÷ 5 = 52.20

Total cost of the vest and the windbreaker = $52.20

Cost of the windbreaker 
= 52.20 - 29
= $23.20

Cost of the jacket
= 4 u
= 4 x 52.20
= $208.80

Difference in cost between the windbreaker and the jacket
= 208.80 - 23.20
= $185.60

Answer(s): $185.60