Step-by-step explanation:
The journal entries are shown below:
a. Bad debt expense A/c Dr $13,931
To Allowance for doubtful debts $13,931
(Being bad debt expense is recorded)
It is computed below:
= $421,300 × 4% - $2,921
= $13,931
b. a. Bad debt expense A/c Dr $17,722
To Allowance for doubtful debts $17,722
(Being bad debt expense is recorded)
It is computed below:
= $421,300 × 4% + $870
= $17,722