The average expenditure of a man for the first five months is Rs.120 and for the next seven months it is Rs.130. If he saves Rs.290 in that year, his monthly average income is : Pick.
A) Rs.140	B) Rs.150	C) Rs.160	D) Rs.170	E) none
Explanation:   Total income = Rs.(120×5+130×7+290)=Rs.1800   Average monthly income   = Rs. (1800/12)=Rs.150   Correct Option: Rs.150
<result>B</result>
The average expenditure of a man for the first five months is Rs.120 and for the next seven months it is Rs.130. If he saves Rs.290 in that year, his monthly average income is :