document.write( "Question 157197: Delia has 115 books. If she has 4 times as many mystery books as science books, how many mystery books does she have? \n" ); document.write( "
Algebra.Com's Answer #115856 by checkley77(12844)![]() ![]() ![]() You can put this solution on YOUR website! x+4x=115 \n" ); document.write( "5x=115 \n" ); document.write( "x=115/5 \n" ); document.write( "x=23 the number of science books. \n" ); document.write( "4*23=92 mystery biooks. \n" ); document.write( "Proof: \n" ); document.write( "23+92=115 \n" ); document.write( "115=115 \n" ); document.write( " |