a company purchase a machine is purchase at acquisition cost of ,1.000.000. on january 2012. Company had spent 350,000 of improvement cost for the machine on the early 2015 that increase company production level by 20 %. the company policy require the machine will be depreciated using straight line method with estimated useful life of 20 years, and an estimated residual value of 10% of its acquisition cost. In 31 december 2019 the company expected the remaining useful life is expected to be only 7 years.

a. calculate the company depreciation for the year 2012-2014

b calculate the company depreciation for 2015-2019, and for the year 2020