Answer:
If there was a discount allowed of Rs. 2,000 then it means that the total amount the debtor was owing was:
= Cash paid by debtor + Discount allowed
= 18,000 + 2,000
= Rs. 20,000
Journal entry is therefore:
Date Account Title Debit Credit
XX-XX-XXXX Cash $18,000
Discount allowed $ 2,000
Accounts Receivable $20,000