Answer: $35,798.82
Step-by-step explanation:
Find the expected warranty costs and then discount them using the effective interest rate:
Year 1:
= (10,000 * 20%) + (20,000 * 80%)
= $18,000
Year 2:
= (15,000 * 50%) + (25,000 * 50%)
= $20,000
Estimated warranty liability is the present value:
= 18,000 / (1 + 4%) + 20,000 / (1 + 4%)²
= $35,798.82