document.write( "Question 93779: After a test, a teacher worked out the average mark for her class of 10 pupils. It was 81%\r
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document.write( "One of the pupils scored only 27%, which was much less than any of the other marks.\r
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document.write( "The teacher decided to work out a new average, leaving out the lowest mark. What was the new average? \n" );
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Algebra.Com's Answer #68319 by jim_thompson5910(35256)![]() ![]() ![]() You can put this solution on YOUR website! Let x=sum of the scores of the remaining students \r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "First write the percentages in decimal form by dividing by 100:\r \n" ); document.write( "\n" ); document.write( "81 percent= \n" ); document.write( "\n" ); document.write( "27 percent= \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "So the sum of the scores for the remaining 9 students is 7.83. Now divide this sum by 9 to find the new average\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Now multiply 0.87 by 100 to get a percentage\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "So the new average is 87% \n" ); document.write( " |