Crane Company uses the units-of-activity method in computing depreciation. A new plant Estimated salvage value at the end of its useful life is $3500. What is the depreciation cost per unit? asset is purchased for $30 that will roduce an estimated 15000 nitstsvr ts O $3.30 O $3.53 O $0.33 O $0.35 Crane Company uses the units-of-activity method in computing depreciation. A new plant Estimated salvage value at the end of its useful life is $3500. What is the depreciation cost per unit? asset is purchased for $30 that will roduce an estimated 15000 nitstsvr ts O $3.30 O $3.53 O $0.33 O $0.35