+129 In the primary school library, there were 221 more fiction books than non-fiction books. If 3/5
of the non-fiction books and 4/7 of the fiction books were borrowed, the remaining fiction
books will be twice as much as the non-fiction books. Find the number of non-fiction books in the library at first.
+1694 In the primary school library, there were 221 more fiction books than non-fiction books. If 3/5
of the non-fiction books and 4/7 of the fiction books were borrowed, the remaining fiction
books will be twice as much as the non-fiction books. Find the number of non-fiction books in the library at first.
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Fiction books => 221+x Non-fiction books => x
There are 255 non-fiction books.
