On January 1, 2018, Jacob Inc. purchased a commercial truck for $48,000 and uses the
straight-line depreciation method. The truck has a useful life of eight years and an
estimated residual value of $8,000. On December 31, 2019, the truck was exchanged for a
new truck valued at $60,000. Jacob received a trade allowance of $35,000 on the exchange
with the remaining $25,000 paid in cash. What amount of gain or loss should Jacob Inc.
record on December 31, 2019?