Final answer:
The increase to bad debt expense at the end of April is $12,500, calculated by evaluating the estimated uncollectible percentages for each category of receivables, summing them together, and subtracting the existing allowance for doubtful accounts balance.
Step-by-step explanation:
The increase to bad debt expense at the end of April can be calculated by estimating the uncollectible accounts based on the aging of accounts receivable and applying the respective uncollectible percentages. We need to analyze each category of the receivables for their estimated uncollectible amounts.
- Current $100,000 at 1% uncollectible: $1,000
- 0-30 days past due $50,000 at 5% uncollectible: $2,500
- 31-60 days past due $20,000 at 10% uncollectible: $2,000
- 31-90 days past due $10,000 at 20% uncollectible: $2,000
- >90 days past due $20,000 at 50% uncollectible: $10,000
Adding all these up gives us a total estimated uncollectible amount of $17,500. There is already a balance of $5,000 in the allowance for doubtful accounts. The bad debt expense for April would therefore be the difference, which is $17,500 - $5,000, resulting in an increase of $12,500.