In a public library there are 110,000 books, 40% of which are
science books. It was decided to add 20,000 new books to
the library. How many of the new books should be science
books in order to bring the percentage of science books in
the library up to 45%?
(a) 15000
(b) 1500
(c) 1450
(d) 14500
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the probability of a option to be correct is 25 percent
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