At Joel’s bookstore, the current inventory is 30% historical fiction. Of the historical fiction books, 40% are new releases, while 50% of the other books are new releases. What fraction of all new releases are the historical fiction new releases?	Pick: A) 4/25 B) 12/47 C) 2/5 D) 8/15 E) 2/3
let there be 100 books in all   Historic fiction books = 30% of total = 30   Other books = 70   New historic fiction = 40% of 30 = 12   Other new books = 50% of 70 = 35   total new books = 35+12= 
<gadget id="calculator">35+12</gadget>
<output>47</output>
47   fraction= 12/47   Ans: 12/47
<result>B</result>
At Joel’s bookstore, the current inventory is 30% historical fiction. Of the historical fiction books, 40% are new releases, while 50% of the other books are new releases. What fraction of all new releases are the historical fiction new releases?