document.write( "Question 987871: 36 boys in a class weigh 42 kg on an average . if their teacher is included, the average increase by 1.5 kg, find the teachers weigh \n" ); document.write( "
Algebra.Com's Answer #608565 by ssenin(1)\"\" \"About 
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x= all boys's weight
\n" ); document.write( "y= all boys and teacher weight\r
\n" ); document.write( "\n" ); document.write( "x/36 = 42
\n" ); document.write( "x = 1,512\r
\n" ); document.write( "\n" ); document.write( "y/37 = 43.5
\n" ); document.write( "y = 1,609.5\r
\n" ); document.write( "\n" ); document.write( "y-x = teacher's weight = 1,609.5-1,512 = 97.5
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