document.write( "Question 959804: An experienced bricklayer can construct a small wall in 3 hours. If him and his apprentice can complete the job together in 2 hours, how long does it take his apprentice to build the same wall by himself?
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Algebra.Com's Answer #586610 by lwsshak3(11628)\"\" \"About 
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An experienced bricklayer can construct a small wall in 3 hours. If him and his apprentice can complete the job together in 2 hours, how long does it take his apprentice to build the same wall by himself?
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\n" ); document.write( "An experienced bricklayer can construct a small wall in 3 hours.
\n" ); document.write( "so his work rate=1/3
\n" ); document.write( "His apprentice can construct a small wall in x hours.
\n" ); document.write( "so his work rate=1/x
\n" ); document.write( "together they can complete the job in 2 hours
\n" ); document.write( "so their work rate=1/2
\n" ); document.write( "..
\n" ); document.write( "sum of indv work rates=work rate working together
\n" ); document.write( "1/3+1/x=1/2
\n" ); document.write( "1/x=1/2-1/3=3/6-2/6=1/6
\n" ); document.write( "x=6
\n" ); document.write( " how long does it take his apprentice to build the same wall by himself? 6 hrs \n" ); document.write( "
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