Wesley buys a sweater, a shirt and a jumpsuit. The average cost of these items is $92. The cost of the jumpsuit is four times the total cost of the sweater and the shirt. If the sweater costs $26, find the difference in cost between the shirt and the jumpsuit.
Total cost of the 3 items
= 3 x 92
= $276

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

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

5 u = 276 

1 u = 276 ÷ 5 = 55.20

Total cost of the sweater and the shirt = $55.20

Cost of the shirt 
= 55.20 - 26
= $29.20

Cost of the jumpsuit
= 4 u
= 4 x 55.20
= $220.80

Difference in cost between the shirt and the jumpsuit
= 220.80 - 29.20
= $191.60

Answer(s): $191.60