Tucker Corporation purchased a delivery van on March 18th, 2021. Assume this van was the company's only capital asset and that the company uses the half-year rule in the year of acquisition and disposal for straight-line and double-declining balance depreciation methods. The following information is available.

Cost/ Estimated useful life/ Residual value/

30000, 5 years of 200,000 kms $12000

The van was driven 20,000 km in 2021.

Required:

1. Calculate the depreciation for 2021 under each of the following methods:

a. Usage

b. Straight-line

c. Double-declining balance

2. Make a table and compare the depreciation expense and carrying amount for 2021.

3. If one of management's objectives is to maximize 2021 net income, what method should be adopted?