Find the arithmetic mean of the sales per day in a fair price shop in a weekRs. 10000, Rs. 10250, Rs. 10790, Rs. 9865, Rs. 15350, Rs. 10110.
Calculate the gross profit /loss if:
Sales Rs. 60,000; Cost of sales Rs. 50,000; Opening stock Rs. 10,000; Purchases Rs.40,000; Wages Rs. 20,000 and Office rent Rs. 10,000.