document.write( "Question 463419: Larry's average (arithmetic mean) score on the first four of five tests is 88. If Larry wants to raise his average by 2 points, what score must he earn on his fifth test?\r
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Algebra.Com's Answer #317525 by alicealc(293)![]() ![]() ![]() You can put this solution on YOUR website! (4*88 + x)/5 = 88 + 2 \n" ); document.write( "(352 + x)/5 = 90 \n" ); document.write( "352 + x = 90 * 5 \n" ); document.write( "352 + x = 450 \n" ); document.write( "x = 450 - 352 = 98\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "so, for the fifth test, he must earn 98 \n" ); document.write( " |