Solution :
1. This is not a loss contingency as extended warranty is being priced as well sold separately from warranted products and therefore constitutes the separate sales transaction.
2.
Event General Journal Debit Credit
1 Cash $412,000
Unearned revenue -- extended warranties $412,000
2. Unearned revenue -- extended warranties $ 57937.50
Revenue - Extended Warranties $ 57937.50
Working :
The manufacturer provided 90 days which is 3 months of free warranty. Thus a customer who is purchasing the extended warranty is for 09 months.
Now amount received by Carnes Electronics for the extended warranty in one year = $412,000
So,
of sales.
The warranty is for two years and so 4.5 months in one year.
Therefore the revenue earned on the extended warranty is :

= $ 57937.50