Question
The average expenditure of a man for the first seven
month is Rs.12000 and for the next five months is Rs.9000. If he saves 15000 in that year then find his average monthly income.Solution
Total expenditure in first 7 months = 12000 × 7 = Rs.84000 Total expenditure in last 5 month = 9000 × 5 = Rs.45000 Total income of the man in a year = 84000 + 45000 + 15000 = Rs.144000 His average income in a month = 144000/12 = Rs. 12000
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