Answer:
a. Particulars Amount
Sales revenue - Gross $7,400
Less: Sales discount $74 ($7,400*1%)
Net sales revenue $7,474
b. Particulars Amount
Sales revenue-Net $7,474
Add: Freight paid on behalf of purchaser $390
Account receivable debited $7,864
c. Particulars Amount
Total amount due $7,938
Less: Sales discount ($7,400*1%) $74
Net amount to be received $7,864