Answer:
a. Depreciation expense = Cost/Life = $84,000/30 = $2,800 per year
b. Cost of timber sold = Per arce - Land value = $1,400 - $400 = $1,000
Timber value = Cost of timber sold * Acre = $1,000 * 9,000 acres = $9,000,000
Land value = Timber value/Estimated Board feet * Sold Board feet = 9,000,000/3,500,000 * 700,000 = $1,800,000
Total Cost of timber sold = Timber value - Land value = $9,000,000 - $1,800,000 = $7,200,000
Depletion = Timber value * [Total Cost of timber sold+Replacement cost/Estimated Board feet]
Depletion = $900,000 * $7,200,000+$100,000/5,000,000
Depletion = $900,000 * 1.46
Depletion = $1,314,000