Comprehension Passage
Directions: Study the following data and answer the following questions:
A and B bought some books and notebooks. The price of a book and a notebook is Rs.70 and Rs.40 respectively. The number of notebooks A have is 20 less than the number of notebooks B have. The ratio between the number of notebooks and books B have is 9 : 11. A has 10 more notebooks than books. The total books bought by two is 170.
Find the average number of books and notebooks bought by A and B.
1
175
2
170
3
155
4
165