document.write( "Question 113462This question is from textbook
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document.write( ": I know the answer, which is 97, because I found it in the back of the book, but I can't figure out how to solve the problem and I need to show work. Please help me with the steps. The question is:\r
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document.write( "Verna decided to sell her collection of paperback books. To Fred, she sold 2 books, and one fifth of what was left. Later to Joan she sold 6 books, and one fifth of what then remained. If she sold more books to Fred than to Joan what was the least possible number of books in her original collection? \n" );
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Algebra.Com's Answer #82544 by rajagopalan(174)![]() ![]() You can put this solution on YOUR website! This a beautifully coined problem. \n" ); document.write( "Solution: \n" ); document.write( "First we find the solution for both Fred and Joan getting equal books. \n" ); document.write( "Then we add one more to Fred logically. \n" ); document.write( "Let the total number of books with Verna = x \n" ); document.write( "Books got by Fred = 2+((x-2)/5) ...first two plus one fifth of (x-2) \n" ); document.write( "Books got by Joan=6+((1/5)x(4/5(x-2)-6)... \n" ); document.write( "equaiting both \n" ); document.write( "1/5(4/5(x-2)-6)+6=((x-2)/5)+2 \n" ); document.write( "multiply thro out by 5 \n" ); document.write( "(4/5)(x-2)-6+20=x-2 \n" ); document.write( "4(x-2)-30+100=5x-10 ...(again x5) \n" ); document.write( "4x-8-30+100=5x-10 \n" ); document.write( "100-38=x \n" ); document.write( "72=x \n" ); document.write( "so with 72 books both get equal number of books (14 each) (2 + 70/5)=2+14=16 \n" ); document.write( "so for Fred to get one more than Joan you have to add 5 more to Fred ( as denomoiantor is 5 in both cases. \n" ); document.write( "which leads to 2+(F/5)=21 \n" ); document.write( "F=95 \n" ); document.write( "and total books =95+2=97\r \n" ); document.write( "\n" ); document.write( "Also you can use reduxio ad absurdem mehtod ie from 72 u keep on trying 77, 82 etc till u get a full number for Joan.\r \n" ); document.write( "\n" ); document.write( "Answer 97 books\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |