A machine with a cost of $136,000 has an estimated residual value of $17,000 and an estimated life of 6 years or 17,000 hours. It is to be depreciated by the units-of-activity method. What is the amount of depreciation for the second full year, during which the machine was used 6,300 hours? Oa. $27,100 Ob. $56,700 c. $44,100 Od. $6,300 Machinery was purchased on January 1 for $70,560.00. The machinery has an estimated life of seven years and an estimated salvage value of $9,000. Double-declining-balance depreciation for the second year would be (round calculations to the nearest dollar): Oa. $15,400 Ob. $13,900 c. $14,400 Od. $13,400 A fixed asset with a cost of $25,000 and accumulated depreciation of $22,500 is sold for $4,250. What is the amount of the gain or loss on disposal of the fixed asset? Oa. $1,750 gain Ob. $2,500 loss Oc. $1,750 loss Od. $2,500 gain