Assume that the company uses the aging of accounts receivable method. The following information was furnished by the credit

manager for use in calculating the estimated loss from uncollectible accounts. The balances of accounts were computed prior to

the charge$-$offs in item $1.$Compute the estimated uncollectible accounts as of December $31,201.$

Could someone please help and explain it to me with this question? I don't know why I got it wrong. Thank you!!