Answer:
$8,500 favorable
Explanation:
Data provided in the question
Net capital loss in year 5 = $37,500
Net capital gains in year 4 = $29,000
Net capital gains in year 6 = $42,000
So the amount and the nature of the book tax difference in year 6 is
Tax purpose
= Net capital loss in year 5 - Net capital gains in year 4
= $37,500 - $29,000
= $8,500
So in year 6, the tax purpose is $8,500 which is deducted and for book purpose it is zero.