Answer:
a. Realized gain of $80,000 on involuntary conversion of building ($10,000 of gain is recognized).
b. Mining exploration costs incurred on May 1 of current year; $24,000 is deductible from current-year taxable income.
c. Sale of equipment to unrelated third party for $240,000; basis is $120,000 (no election out of installment method; no payments are received in current year).
d. Dividends of $20,000 received from 5% owned corporation, together with dividends received deduction (assume that taxable income limit does not apply).
e. Domestic production activities deduction of $45,000 claimed in current year.
f. Section 179 expense deduction of $100,000 in current year.
g. Impact of current-year section 179 expense deduction in succeeding year.
h. MACRS depreciation of $80,000. ADS depreciation would have been $90,000.
i. Federal income taxes of $80,000 paid in current year.