Requirement 2. Now assume that Muffin Corporation uses the aging-of-receivables method. Muffin Corporation estimates that its Allowance for Uncollectible Accounts should have a credit balance of $20,000. Calculate the amount of its Uncollectible-Account Expense. What is the ending balance of the Allowance for Uncollectible Accounts under this scenario? Muffin Corporation has $ of uncollectible-account expense using the aging-of-receivables method. The ending balance of the Allowance for Uncollectible Accounts is $ under this scenario. Requirement 2. Now assume that Muffin Corporation uses the aging-of-receivables method. Muffin Corporation estimates that its Allowance for Uncollectible Accounts should have a credit balance of $20,000. Calculate the amount of its Uncollectible-Account Expense. What is the ending balance of the Allowance for Uncollectible Accounts under this scenario? Muffin Corporation has $ of uncollectible-account expense using the aging-of-receivables method. The ending balance of the Allowance for Uncollectible Accounts is $ under this scenario