document.write( "Question 328028: At a used book sale, 100 books are adult books and 160 books are children's books. Seventy of the adult books are nonfiction while 60 of the children's books are nonfiction. If a book is selected at random, find the probability of selecting the following \r
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document.write( "a. fiction \r
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document.write( "b. not a children's nonfiction \r
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document.write( "c. an adult book or a children's nonfiction \n" );
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Algebra.Com's Answer #234935 by solver91311(24713)![]() ![]() You can put this solution on YOUR website! \r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The probability of anything is the number of ways that it can happen that you would consider a success divided by the number of ways it can happen total -- successes and failures.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "There are 100 adult books and 160 children's books, hence there are 260 total books. That is your denominator.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The numerators are:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "1. (The number of adult books minus the number of adult non-fiction) + (the number of children's books minus the number of children's non-fiction)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "2. The total number of books (260) minus the number of children's non-fiction.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "3. The number of adult books plus the number of children's non-fiction.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "John \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " |