document.write( "Question 273631: The average of a list of positive numbers is 20 per cent of the sum of the
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document.write( "numbers. How many numbers are there in the list?\r
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document.write( "(A) 5 (B) 20 (C) 80 (D) 100 (E) Cannot be said. \n" );
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Algebra.Com's Answer #199873 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! The average of a list of positive numbers is 20 per cent of the sum of the \n" ); document.write( "numbers. How many numbers are there in the list? \n" ); document.write( "------------ \n" ); document.write( "Let the sum be \"x\": \n" ); document.write( "--- \n" ); document.write( "Average = sum/# \n" ); document.write( "--- \n" ); document.write( "Average = 0.20x \n" ); document.write( "sum/# = 0.20x \n" ); document.write( "x/# = 0.20x \n" ); document.write( "# = 1/0.20 \n" ); document.write( "# = 5 \n" ); document.write( "================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( "(A) 5 (B) 20 (C) 80 (D) 100 (E) Cannot be said. \n" ); document.write( " \n" ); document.write( " |