The average expenditure of a man for the first five months is Rs.240 and for the next seven months it is Rs.130. If he saves Rs.290 in that year, his monthly average income is : Choose the correct answer:
A) Rs.140  B) Rs.150  C) Rs.160  D) Rs.200  E) none
Explanation:   Total income = Rs.(240Ã—5+130Ã—7+290)=Rs.2400   Average monthly income   = Rs. (2400/12)=Rs.200   Correct Option: Rs.200
<result>D</result>
The average expenditure of a man for the first five months is Rs.240 and for the next seven months it is Rs.130. If he saves Rs.290 in that year, his monthly average income is :