P+Q mean P is the brother of Q; P-Q means P is the mother of Q and P*Q means P is the sister of Q.Which of the following means M is the maternal uncle or R?
The ratio of income of A to that of B is 5 : 4 and the expenditure of A to that of B is 3 : 2. If at the end of the year, each saves Rs. 800, the income of A is:
