Answer:
How much gain should Sheridan recognize on this exchange, 
and at what amount should the acquired computer be recorded, respectively
- the new computer should be recorded at $318,000
 
Step-by-step explanation:
Since the cash received ($135,000) represents more than 25% of the asset exchange, this transaction must be recorded as a cash sales. 
Journal entry to record the transaction:
Dr Cash 135,000
Dr Computer, new 318,000
Dr Accumulated depreciation - computer, old 32,700
 Cr Computer, old 453,000
 Cr Gain on asset exchange 32,700