Answer:
a. $4,191
Step-by-step explanation:
The computation is shown below:
Number of days Receivables % Uncollected amount
Current $68,000 1% $680
0-30 days $26,300 5% $1,315
31-60 days $6,560 10% $656
61-90 days $3,320 25% $830
Over 90 days $3,000 50% $1,500
Total $107,180 $4,981
Now
Allowance for doubtful balance after write off =is
= $3,380 - $2,590 = $790
So,
Uncollectible account expense is
= $4,981 - $790
= $4,191