Required Information Exercise 11-4 (Algo) Other depreciation methods [LO11-2] [The following Information applies to the questions displayed below.] On January 1, 2021, the Allegheny Corporation purchased equipment for $295,000. The estimated service life of the equipment is 10 years and the estimated residual value is $20,000. The equipment is expected to produce 280,000 units during its life. Required: Calculate depreciation for 2021 and 2022 using each of the following methods.