The UCC balance for a firms automobile fleet at the end of 2009 was $ 10 000. There was one truck in service at this time. At the beginning of 2010, the firm purchased two trucks for a total of $ 50 000. At the beginning of 2012, it purchased another truck for $ 20 000. At the beginning of 2013, the truck owned in 2009 was sold for $ 3000. The CCA rate for automobiles is 30 percent. What was the firms UCC balance at the end of 2013?