Question

Shryia read a 481-page-long book cover to cover in a single session, at a constant rate. After reading for 1.5 hours, she had 403 pages left to read.How fast was Shryia reading?

Answer 1

403 pages left, then she had read (481 - 403) = 78 pages in that 1.5 hours.
(78 pages / 1.5 hours) = (78 / 1.5) (pages/hours) = 52 pages per hour.
The whole book is 481 pages.
To read the whole book at the same rate will take (481 pages) / (52 page/hour) = (481 / 52) (hour) = 9.25 hours. 
9 hours 15 minutes

Answer 2

Answer:  Shryia was reading her book at a rate of 52 pages per hour .

Explanation:

Since we have given that

Total number of page in a long book=481

After reading for 1.5 hours,

Number of page left = 403

Total number of page Shryia read in 1.5 hours is given by

$481-403=78$

Rate at which Shriya is reading her book is given by

$\frac{78}{1.5}=52\text{ page per hour}$

So, Shryia was reading her book at a rate of 52 pages per hour .