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)\"\" \"About 
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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 \"%2833%2Ax+%2B+47%29%2F34+=+14\" \r
\n" ); document.write( "\n" ); document.write( "Cross multiplying and solving for x,\r
\n" ); document.write( "\n" ); document.write( "\"33%2Ax+%2B+47+=+34%2A+14+=+476\"\r
\n" ); document.write( "\n" ); document.write( "\"33%2Ax+=+476+-+47+=+429\"\r
\n" ); document.write( "\n" ); document.write( "\"x+=+429%2F33+=+13\"\r
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\n" ); document.write( "\n" ); document.write( "Average age of the boys = 13 years.\r
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