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Naoya read a book cover to cover in a single session, at a rate of 55 pages per hour. After reading for 4 hours, he had 330 pages left to read. How long did it take Naoya to read the entire book?

Answer :

osikbro
330/55=6
6+4=10
It took Naoya 10 hours to read the entire book.
Hope this helps!

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