Boston Corp. purchased equipment with a cost of $70,000 at the beginning of 2016. The equipment has an estimated life of 25 years or 25,000 units of product. The estimated residual value is $7,500. During 2016, 1,100 units of product were produced with this machinery. Determine the following:

a. Amount of total accumulated depreciation at December 31, 2016, using units-of-production depreciation.

$

b. Book value at the end of 2016 using straight-line depreciation.

$

c. A company may choose units-of-production depreciation instead of straight-line,