The average monthly expenditure of a family was Rs. 2200 during the first 3 months, Rs. 2250, during the next 4 months and Rs. 3120 during the last 5 months of a year. If the total savings during the year were Rs. 1260, then the average monthly income was ?
Explanation:
Total income of an year = 2200×3 + 2250×4 + 3120×5 + 1260 = 32460
Hence the average monthly salary = 32460/12 = 2705.