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 144/3 = <<144/3=48>>48 pages per hour.

Thus, Sean will finish reading a 264-page book in 264/48 = <<264/48=5.5>>5.5 hours. Answer: \boxed{5.5}.

To find out how long it will take Sean to finish his 264-page book at the same pace, we can set up a proportion.

Let's call the unknown time it will take Sean to finish the book "x" hours.

We know that Sean read 144 pages in 3 hours, so we can write the proportion:

144 pages / 3 hours = 264 pages / x hours

To solve for x, we can Cross Multiply:

144x = 3 * 264

144x = 792

Divide both sides of the equation by 144:

x = 792 / 144

x ≈ 5.5

Therefore, it will take Sean approximately 5.5 hours to finish his 264-page book at the same reading pace.

To find out how long it will take Sean to finish his 264-page book, we can set up a proportion using the given information.

The ratio of pages read to hours is constant. So, we can set up the following proportion:

144 pages / 3 hours = 264 pages / x hours

To find the value of x, we can cross-multiply and solve for x.

(144 pages) * (x hours) = (3 hours) * (264 pages)

144x = 792

Dividing both sides of the equation by 144:

x = 792 / 144

Simplifying the fraction:

x ≈ 5.5

Therefore, it will take Sean approximately 5.5 hours to finish his 264-page book if he reads at the same pace.