Sean has to read a book during summer break. he read 144 pages in 3 hours on the way to his grandma's house. if sean reads at the same pace, how long will it take sean to finish his 264-page book?

Sean reads his book by what speed
This answer is quite unorthodox
LIke a speed question. We will find the amount of pages Sean read per hour or minutes if u want to convert

So speed of reading = amount of pages read/ time
                                 = 144/3 hours or 144/3*60 minutes
                                  =48               or 8/10 minutes

So time taken to complete his book at the same pace he is reading 
amount of pages to read/speed of reading
=264/48      or 264*10/8
=5.5 hours  or 330 minutes

hope u understood