The average monthly expenditure of a man for the first seven months is Rs. 140 and for the next five months it is Rs. 110. If he saves Rs. 330 in that years, his monthly average income is:
1
Rs. 140
2
Rs. 155
3
Rs. 160
4
Rs. 175
5
None of these
The average monthly expenditure of a man for the first seven months is Rs. 140 and for the next five months it is Rs. 110. If he saves Rs. 330 in that years, his monthly average income is: