Required information [The following information applies to the questions displayed below.) On January 1, 2021, the Allegheny Corporation purchased equipment for $150,000. The estimated service life of the equipment is 10 years and the estimated residual value is $18,000. The equipment is expected to produce 240,000 units during its life. Required: Calculate depreciation for 2021 and 2022 using each of the following methods. 2. Double-declining balance. End of Period Depreciation for the Period Beginning of Annual Period Period Book Depreciation Depreciation Value Rate(%) Expense 2021 2022 Accumulated Depreciation Book Value