Answer: $6,000 for both guaranteed and unguaranteed residual value.
Explanation:
Gross Profit = Selling price - Cost of sales
Selling price = Fair value - Present value of residual value
= 40,000 - (7,000 * present value factor, 6%, 4 periods)
= 40,000 - (7,000 * 0.79209)
= $34,455.37
Cost of sales = Cost - Present value of residual value
= 34,000 - (7,000 * 0.79209)
= $28,455.37
Gross Profit = 34,455.37 - 28,455.37
= $6,000