Answer:
see below
Step-by-step explanation:
This transaction is affecting sales. It is increasing sales( revenue account) by Rs 20,000. An increase in sales is recorded by crediting the sales account.
The goods are sold to Mahesh. It is an increase in accounts receivable ( asset account). An increase in assets is recorded as a debit to the asset account.
The Journal will be as follows.
Mahesh A/c Dr. Rs. 30,000
Sales A/c Cr. Rs.20,000