document.write( "Question 737436: an experienced surveyor can survey a certain tract of land in 3 hours. a trainee takes twice as long. how long will be required if they work together. \n" ); document.write( "

Algebra.Com's Answer #450752 by richwmiller(17219) $\"\"$ $\"About$

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1/3+1/6=1/x
\n" ); document.write( "2/6+1/6=1/x
\n" ); document.write( "3/6=1/x
\n" ); document.write( "1/2=1/x
\n" ); document.write( "x=2
\n" ); document.write( " \n" ); document.write( "

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