A shop of electronic goods is closed on Monday. The average daily sales for remaining six days of a week is Rs. 15,640 and the average sale of Tuesday to Saturday is Rs. 14,124. The sales on Sunday is -

Average sales per day for six days of the week = Rs. 15640
Total sales of six days of the week
= 15640 × 6
= Rs. 93840
Average sales to Tuesday to Saturday = Rs. 14124
Total sales from Tuesday to Saturday
= 14124 × 5
= Rs. 70620
∴ Sales on Sunday
= (Rs. 93840 - 70620)
= Rs. 23,220