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:
The average income of A for 15 days is Rs. 70. The average for first five days is Rs. 60 and that for the last nine days is Rs. 80. The income for the sixth day is