document.write( "Question 763569: the average age of 33 boys and the class teacher in a class in 14 years.if the class teacher's age is 47 years.what would the average age of only the boys? \n" ); document.write( "
Algebra.Com's Answer #464873 by ramkikk66(644)![]() ![]() ![]() You can put this solution on YOUR website! Let the average age of the boys be x.\r \n" ); document.write( "\n" ); document.write( "Then the total age of the boys = 33*x\r \n" ); document.write( "\n" ); document.write( "Total age of the class including the teacher = 33*x + 47 (since the teacher is 47 years old)\r \n" ); document.write( "\n" ); document.write( "No. of people in the class including the teacher = 34\r \n" ); document.write( "\n" ); document.write( "Average age of the class (including the teacher) is given to be 14.\r \n" ); document.write( "\n" ); document.write( "So we have \n" ); document.write( "\n" ); document.write( "Cross multiplying and solving for x,\r \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( "Average age of the boys = 13 years.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( ":) \n" ); document.write( " |