Erin's bistro purchases a commercial oven costs $2,400. She plans to use the oven for 7 years, at which point it will have a salvage value of $350. What would be the depreciation charge and book value after 2 years of use using double declining balance depreciation? Depreciation allowance: Book value: Carry all interim calculations to 5 decimal places and then round your final answers to 2 decimal places. The tolerance is 5.00