Whitney Fabricators uses the balance sheet approach to estimate uncollectible receivables. The aging of receivables on December 31, 2018 is shown in part a). Required a) Calculate the required allowance for doubtful accounts. Do not enter dollar signs or commas in the input boxes. Round all answers to the nearest whole number. Aging Category Bad Debt % Balance Required Allowance Under 30 days 3.0% $189,000 $Answer 5670 31 - 60 days 4.0% $60,000 $Answer 2400 61 - 90 days 20.0% $13,000 $Answer 2600 More than 90 days 55.0% $5,000 $Answer 2750 Total $267,000 $Answer 13420 b) Prepare the journal entry on December 31, 2018 to record bad debt expense assuming the allowance account has a $2,600 credit balance. Date Account Title and Explanation Debit Credi