Question: 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 average monthly income ?

  1. Rs 1200
  2. Rs 1250
  3. Rs 1210
  4. Rs 1270

Answer: 1. Rs 1200

Solution:
By calculating total amount expenditure plus saving and dividing with total count of months
(1100 x3 +1000 x 5+ 1200 x4+1300 )/12
3(300+5000+4800+1300)/12
14400/12= Rs. 1200

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