Answer:
For the complete destruction of a business asset, Amy can claim a casualty loss deduction for the tax basis of the machine less any recovery. Hence, Amy can claim a casualty deduction for $1,700 ($2,000-$300)b.
For partial destruction of a business asset, Amy can claim a casualty loss deduction for the lesser of the economic loss (the cost of repair) or the tax basis of the machine. In this case, Amy can deduct $800