Out of 30 days of a month the income of a stall for the first 5 days was 100 per day for the next 10 days the income was 200 per day and for the last 15 days the income was 300 per day. If there was a fixed expenditure of 5000 per month and a variable expenditure of 70 per week. Find the monthly profit of the stall.

Total income for 30 days = 5 * 100 + 10 * 200 + 15 * 300 = 500 + 2000 + 4500 = 7000 Total expenditure = 5000 fixed expenditure per month + variable expenditure of 70 per week Per week = 70 per day = 70 / 7 = 10 For 30 days = 30 * 10 = 300 Total variable expenditure = 5000 + 300 = 5300 Total profit = 7000 – 5300 = 1700