Answer:
The depreciation expense by December 31=$4,500
Explanation:
The expression for the depreciable cost is as follows;
depreciable cost=Acquisition cost-salvage value
where;
acquisition cost=$75,000
residual value=$15,000
replacing;
depreciable cost=75,000-15,000=$60,000
depreciable cost=$60,000
The annual depreciation can be expressed as;
annual depreciation=depreciable cost/estimated life
where;
depreciable cost=$60,000
estimated life=10 years
replacing;
annual depreciation=60,000/10=6,000
annual depreciation=$6,000
depreciation between April 1 and December 31=(9/12)×6,000=$4,500
depreciation by December 31=$4,500
The depreciation expense by December 31=$4,500