In one year the average monthly expenditure of Sapna was Rs. 1100 for the first 3 months of the year Rs. 1000 for the next 5 months and Rs. 1200 for the last 4 months. If the total annual saving was Rs. 1300 then what was Sapna's average monthly income?

Correct option is D

Given:

Average expenditures: Rs. 1100 (3 months), Rs. 1000 (5 months), Rs. 1200 (4 months), Savings: Rs. 1300
Formula Used:
Average income = Total Expenditure + Savings / 12
Solution:
Total Expenditure = 1100 x 3 + 1000 x 5 + 1200 x 4 = 13100
Savings: 1300
Total Salary = 13100 + 1300 = 14400
Monthly income = 14400/12 = 1200