Final answer:
Transactions involving replacement of equipment motor and building addition are classified as capital expenditures, with corresponding journal entries debiting the asset accounts and crediting cash.
Step-by-step explanation:
To answer the question, first, we need to classify the transactions as either revenue expenditures or capital expenditures. Here's the classification:
Capital expenditure: Paying $40,000 cash to replace a motor on equipment that extends its useful life by four years.
Revenue expenditure: Paying $200 cash per truck for the cost of their annual tune-ups.
Revenue expenditure: Paying $175 for the monthly cost of replacement filters on an air-conditioning system.
Capital expenditure: Completing an addition to a building for $225,000 cash.
Now, let's prepare the journal entries for transactions a (motor replacement) and d (building addition), which are classified as capital expenditures:
Journal Entry for Transaction a:
Dr. Equipment 40,000
Cr. Cash 40,000
Journal Entry for Transaction d:
Dr. Building 225,000
Cr. Cash 225,000
These entries reflect the cash outflow and the corresponding increase in the company's assets due to the capital improvements.