Financial Decisions! Chapters 1 and 2 Practice Problems, Partle 18. The following information is available for Brown Theater Company. Calculate the gross profit margin for each year and explain the trend you observe over the three years. 2012 $420 2014 Movie ticket sales $ 500 Concession sales 800 Total sales $1,300 Movie rental expense 480 Cost of concession products 350 Gross profit $ 470 2013 $ 450 600 $1,050 400 300 $ 350 500- $920- 380 280- $260