MCC company uses straight-line depreciation (round to the nearest whole month) and adjusts its accounts annually on 31 December. On 1 January 2016, MCC purchased a van for $450,000 which has an estimated useful life of 9 years and no residual value. On 1 January 2021, the company incurred the following expenditure on the van:

$1,500 for annual maintenance and servicing $60,000 to upgrade the van with a new and more powerful engine $1,000 to paint the van after 5 years of use.

On 1 January 2021, the useful life of the van was revised to 13 years with a residual value of $15,000. Required: (a) What is the book value of the van as at 31 December 2020? (b) Journalize annual depreciation of the van on 31 December 2021. Show workings.