Question

The aggregating monthly expenditure of a family was Rs.6240 during the first three months Rs.6780 during the next four months and Rs.7236 during the last five months of year if the total saving during the year is Rs.7080Average monthly income of the family

Answer 1

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Sum of the expenditure for the first 3 months :

Average of 1 month = ₹ 18720

3 months = 18720 × 3 = ₹ 56160

Sum of the expenditure for the next 4 months :

Average of 1 month = ₹ 20340

4 months = 20340 × 4 = ₹ 81360

Sum of the expenditure for the next 5 months :

Average of 1 month = ₹ 21708

5 months = 21708 × 5 = ₹ 108540

Find the total expenditure :

Total = 56160 + 81360 + 108540 = ₹ 246060

Find the total income :

Total saving = ₹ 35340 (Given)

Total income = Total expenditure + Total saving

Total income = 246060 + 35340 = ₹ 281400

Find the average monthly income :

12 months = ₹ 281400

1 month = 281400 ÷ 12 = ₹ 23450

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