Ivan buys a shirt, a windbreaker and a jumpsuit. The average cost of these items is $32. The cost of the jumpsuit is four times the total cost of the shirt and the windbreaker. If the shirt costs $11, find the difference in cost between the windbreaker and the jumpsuit.
Total cost of the 3 items
= 3 x 32
= $96

Total cost of the shirt and the windbreaker = 1 u
Cost of the jumpsuit = 4 u

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

5 u = 96 

1 u = 96 ÷ 5 = 19.20

Total cost of the shirt and the windbreaker = $19.20

Cost of the windbreaker 
= 19.20 - 11
= $8.20

Cost of the jumpsuit
= 4 u
= 4 x 19.20
= $76.80

Difference in cost between the windbreaker and the jumpsuit
= 76.80 - 8.20
= $68.60

Answer(s): $68.60