document.write( "Question 344282: Math homework: Avg mark on test is 80. if the two lowest scores, 34 & 48 are removed the average is 83. How many students are in the alegbra class? \n" ); document.write( "
Algebra.Com's Answer #246405 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! Avg mark on test is 80. \n" ); document.write( " if the two lowest scores, 34 & 48 are removed the average is 83. \n" ); document.write( "How many students are in the algebra class? \n" ); document.write( ": \n" ); document.write( "Let x = no. of students in the algebra class \n" ); document.write( "then \n" ); document.write( "(x-2) = no. of students that had an average of 83 \n" ); document.write( ": \n" ); document.write( " \n" ); document.write( "Mult by x \n" ); document.write( "83(x-2) + 34 + 48 = 80x \n" ); document.write( ": \n" ); document.write( "83x - 166 + 34 + 48 = 80x \n" ); document.write( "; \n" ); document.write( "83x - 84 = 80x \n" ); document.write( ": \n" ); document.write( "83x - 80x = 84 \n" ); document.write( ": \n" ); document.write( "3x = 84 \n" ); document.write( "x = \n" ); document.write( "x = 28 students originally \n" ); document.write( " \n" ); document.write( " |