on January 1, 2011, Dexter Corporation purchased a piece of equipment, which is being depreciated on a straight-line basis over a useful life of 5 years, with a residual value of $10,000. The equipment's accumulated depreciation account has a credit balance of $70,000 and an adjusted credit balance of $105,000 on January 1, 2013 and December 31, 2013, respectively. The original cost of the equipment is: Multiple Choice $105,000 O O $115,000 O $185,000 O $175,000 $175,000 None of the other alternatives are correct