Ramirez Company installs a computerized manufacturing machine in its factory at the

beginning of the year at a cost of $43,500. The machines useful life is estimated at 10 years, or

$385,000 units of product, with a $5,000 salvage value. During its first year of production, the

machine produces 30,000 units of product. During its second year of production, the machine

produces 32,500 of product. Determine the machines useful life for the first and second year

under the following methods of depreciation

A. Straight-line depreciation?

B. Units of Production depreciation?

C. Double Declining Balance depreciation?