With the highly anticipated release of the latest Star Wars film, fans wish to relive the glory of the previous movies. As a result, a perfectly competitive market for Star Wars DVD box sets has formed. George is a producer in this market, and has total fixed costs of $220. Other data relating to costs and output are shown in the table below: Quantity Average Variable Cost (box sets) AVC ($/box set) 0 10 8 20 7.20 30 6.50 40 6.10 50 5.80 Using this information, calculate what quantity George needs to produce so that his average total cost will be $10.20 per box set? Answer to the nearest whole number (with no decimal places)