Answer:
A. No, she will not complete the book in an hour.
B. It will take 24 more mins to finish the book.
Explanation:
A. If it takes her 35 mins to read 20 pages, it takes her 7/4 mins to read one page (35/20 = 7/4). To read 48 pages, it'll take her 48*(7/4) = 84 mins, which is more than 60 mins.
B. 84 - 60 = 24, it will take her 24 more mins to finish the book.
Hope this helps!