Required information (The following information applies to the questions displayed below.) On January 1, 2021, the Allegheny Corporation purchased equipment for $172,000. The estimated service life of the equipment is 10 years and the estimated residual value is $18,000. The equipment is expected to produce 350,000 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 Rate (%) Expense Value 2021 2022 Accumulated Depreciation Book Value