document.write( "Question 156391: In a particular course a student's semester grade is determined by the average of five hour tests. On her first four hour tests, a student's grades were 82 81 82 and 75. If her semester average turned out to be 82, what did she get on her fifth exam? \n" ); document.write( "
Algebra.Com's Answer #115193 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! In a particular course a student's semester grade is determined by the average of five hour tests. On her first four hour tests, a student's grades were 82 81 82 and 75. If her semester average turned out to be 82, what did she get on her fifth exam? \n" ); document.write( "----------------- \n" ); document.write( "The average 82 is the sum divided by 5. So 82 = sum/5. Sum = 82*5 = 410. \n" ); document.write( "The other 4 add up to 320, so the 5th one is 410-320, = 90. \n" ); document.write( " |