Problem 6-4: The Northrock Corporation The Northrock Corporation produced the following summary of its historical experience of write offs of Accounts Receivable (A/R) on October 31, 2018 Year A/R at Year endUncollectible and written off in subsequent years 2015 16000 2016 14000 2017 4000 2018 9000 800 1400 200 450 Required 1. Calculate the percentage loss on Accounts Receivable for the period 2015 to 2018 by calculating total write offs over the period as a % of total A/ R. Round your calculation to two decimal places 2. Compute the balance for the Allowance for Doubtful accounts (rounded to the nearest S) on October 31, 2018 if Accounts Receivable on that date were 6000. Apply the % ending A/R method using the percentage calculated in part 3. Scenario A: On October 31, 2018 the unadjusted Allowance for Doubtful Accounts was 60 credit. Prepare an adjusting entry to obtain the amount that you calculated in part 2. 4. Scenario B: On October 31, 2018 the unadjusted Allowance for Doubtful Accounts was 750 credit. Prepare an adjusting entry to obtain the amount that you calculated in part 2. 5. Scenario C: On October 31, 2018 the unadjusted Allowance for Doubtful Accounts was 750 debit. Prepare an adjusting entry to obtain the amount that you calculated in part 2. Upon completion, enter the following data here (enter a credit to bad debt expense as negative) Percent losses (round to nearest integer) Balance for Allow. Doubtful Bad Debt Expense (Case 1) Bad Debt Expense (Case 2) Bad Debt Expense (Case 3) submit