The average monthly expenditure of Anil for first four months of a year was ₹6000 and for the next eight months it was ₹8200. He saved ₹12400 during the year. Find his average monthly income (in ₹) during the year.
Answer & explanation
Correct answer: option 2
Average = \(\frac{Sum\; of \;all\; observation }{ Total \; number\; of \;observation }\)
Sum of expenditure of 4 months = 4 × 6000 = 24000
Sum of expenditure of 8 months = 8 × 8200 = 65600
Total expenditure = 65600 + 24000 = 89600
Total Income of year = Expenditure + Saving
= 89600 + 12400
= 1,02,000
Monthly income = \(\frac{ 102000}{12}\)
= 8500
The correct answer is Option (2) → 8500