Erin's bistro purchases a commercial oven costs $2,400. She plans to use the oven for 5 years, at which point it will have a salvage value of $500. What would be the depreciation charge and book value after 3 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