Find Out the Monthly Average Income.

The average expenditure of a man for the first five months is Rs.1200 and for the next seven months is Rs.1300. If he saves Rs.2900 in that year, his monthly average income is:

  1. Rs.1700
  2. Rs.1400
  3. Rs.1500
  4. Rs.1600
Monis Rasool Professor Asked on 21st November 2015 in Maths.
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1 Answer(s)

Correct Option is (3) Rs. 1500

Explanation:-
The average expenditure of a man for first five months = Rs. 1200
Therefore, the total expenditure of five months = 1200 x 5 
 = Rs. 6, 000

The average expenditure of next seven months = Rs. 1300
Therefore, the total expenditure of seven months = 1300 x 7 
 = Rs. 9100

He saves in a year = Rs. 2900

So, the total income of a man in a year = 6, 000 + 9, 100 + 2, 900
 = Rs. 18, 000
Then, the average monthly income of a man = 18, 000/12
 = Rs. 1, 500

Hence, the answer is (3) Rs. 1500.

 

 

Monis Rasool Professor Answered on 21st November 2015.
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