5. (8 marks) Windsor Auto Parts uses the aging method to estimate bad debt expense. At the end of 2016, the company had an accounts receivable balance of $34,800 and a credit balance in the allowance for doubtful accounts of S 380. The company had the following analysis of accounts receivable at the end of 2016 Accounts Receivable Age Current 1-15 days past due 16-45 days past due 46-90 days past due Over 90 days past due Proportion Expected to Default 1% 2% 8% 15% 30% Amount $ 20,400 5,300 3,100 3,600 S 34,800 Windsor has a December 31 yearend. Required: 1. Calculate the desired ending balance of the allowance for doubtful accounts at the end of the year