The following pie chart gives the measures of the central angles of the sectors that reflect the number of questions in each of 8 different books with respect to the total number of questions in these 8 books taken together.

If the number of questions in the books B3 and B6 taken together is 165, then what is the total number of questions in the 8 books taken together?

900

⇒ Number of books B3 & B6 = \(\frac{18+48 }{360}\) × Total number of Books

ATQ,

⇒ 165 = \(\frac{66 }{360}\) × Total number of Books

Total number of books = 165 × \(\frac{360 }{66}\) 

= 900