document.write( "Question 367045: On Tuesday, 20 of the 25 students in an algebra class took a test and their average was 86. On Wednesday, the other 5 students took the test, and their average was 81.What was the average for the entire class?\r
\n" );
document.write( "\n" );
document.write( "(A) 81.8 (B) 82 (C) 83.5 (D) 85 (E) 87 \n" );
document.write( "
Algebra.Com's Answer #261692 by mananth(16946)![]() ![]() You can put this solution on YOUR website! 20 students average = 86 \n" ); document.write( "total of 20 students = 86 * 20 = 1720 \n" ); document.write( ".. \n" ); document.write( "5 students average = 81 \n" ); document.write( "total of 5 students = 5*81 = 405 \n" ); document.write( ".. \n" ); document.write( "Average of class = total of 25 / number \n" ); document.write( "Average = 1720 +405 / 25 \n" ); document.write( "average = 2125/25 \n" ); document.write( "Average = 85 of the entire class \n" ); document.write( "... \n" ); document.write( "m.ananth@hotmail.ca \n" ); document.write( " \n" ); document.write( " |