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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?
How long did it take her to read the entire book?

Respuesta :

altavistard
Let her reading rate be r.  Then 481-403=1.5r, or 78=1.5r,   or   r = 78/1.5

She reads at the rate r, 52 pages per hour.

481 pages
----------------- = 9.25 hours to read the entire book.
52 pages/hr

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