Rainy day corp., a public company produces and distributes umbrellas around the world to both wholesalers and direct retailers. Rainy Day Corp. sells most of its products on credit to its customers. The December $31,2023,$ aged receivables report is as follows:

$0-3031-6061-90<90$

AR outstanding $2023-12-31$ $ $225,000$ $ $175,000$ $ $57,000$ $ $25,000$

$ estimate of uncollectable $2\mathrm{.}0\%5\mathrm{.}0\%8\mathrm{.}0\%20\mathrm{.}0\%$

Instructions:

a$.$ Calculate the allowance for expected credit losses on Dec $31,2023,$ assuming that there is an existing balance in the allowance for expected credit losses account of Dr$.$ $ $1,500$ before any year$-$end adjusting entries.

b$.$ Prepare the required year$-$end journal entry to recognize loss on impairment.

c$.$ Calculate the net realizable value of accounts receivable as it would appear on the statement of financial position.

d$.$ Take the role of the account receivable analyst for Rainy Day Corp. The controller of the company has asked for an explanation of how the estimate of uncollectable percentages was determined. Using predictive $($date$)$ analytics, what types of factors would be considered in determining these estimates?