ABC Ltd has accounts receivable of $200,000 at 31 March 2020. An analysis of the accounts shows these amounts: Month of Sale Total outstanding March 90,000 February 60,000 December and January 35,000 November and October 15,000 Credit terms are 2/7. n30. At 31 March 2020 there is a $12,000 credit balance in Allowance for Doubtful Debts before adjustment. The entity uses the ageing of accounts receivable basis for estimating uncollectable accounts. ABC Ltd estimates of bad debts are as follows: Age of accounts Estimate % uncollectable Current 1% 4% 1-30 days past due 31-90 days past due Over 90 days 20% 50% Required: a) Determine the total estimated to be uncollectable. b) Prepare the adjusting entry at 31 March 2020 to record the bad debts expense. c) Discuss the differences between a bad debts and provision for doubtful debts