Current Attempt in Progress Sheridan Company purchased machinery on January 1 at a list price of $320000, with credit terms 2/10, n/30. Payment was made within the discount period. Sheridan paid $22250 sales tax on the machinery and paid installation charges of $4100. Prior to installation, Sheridan paid $11200 to pour a concrete slab on which to place the machinery. What is the total cost of the new machinery? $339950. $357550 $351150. $335850.