Please help me with this accounting problem.

Thank you

Double - Declining Balance Depreciation A bul ding acquired at the beginning of the year at a cost of $1 375 090 has an estimated res idal value of 5250 100 an an estimated useful life of 40 years etermme the following . all The double - declining - balance rate X 4 ( b ) The do able - declining - balance depreciation for the first year