hi i tried to ask to the person that responded this question for me, but i was not able, why does the tutor multiplies 30 units* 350 if the problem says there is 40 dining sets , which cost is 350 each. i am confused. i would appreciate your help.

please need help 19. On August 5, 2018, Gayland Furniture shipped 40 dining sets on consignment to Furniture Miami Outlet, Inc. The cost of each dining set was $350 each. The cost of shipping the dining sets amounted to $1,800 and was paid for by Gayland Furniture. On December 30,2018 , the consignee reported the sale of 30 dining sets at $850 each. The consignee remitted payment for the amount due after deducting a 6% commission, advertising expense of $600, and installation and setup costs of $780. The total profit on units sold for the consignor is a. $22,590 (b.) $10,290 c. $12,090 d, $19,890 Calculation of the total profit on units sold for the consignor: Thus, the total profit on units sold for the consignor is $10,290. Explanation The shipping cost, advertising cost and other indirect costs will NOT be taken proportionately. We have to consider full costs even for 30 units of sales