document.write( "Question 397409: A plumber and his assistant work together to replace the pipes in an old house. The plumber charges $45 an hour for his own labor and $25 for his assistant on this job, and the labor charge on the final bill is $4025. How long did the plumber and his assistant work on this job? \n" ); document.write( "

Algebra.Com's Answer #281682 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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A plumber and his assistant work together to replace the pipes in an old house.
\n" ); document.write( " The plumber charges $45 an hour for his own labor and $25 for his assistant on
\n" ); document.write( " this job, and the labor charge on the final bill is $4025.
\n" ); document.write( " How long did the plumber and his assistant work on this job?
\n" ); document.write( ":
\n" ); document.write( "Let t = time in hrs that both worked
\n" ); document.write( ":
\n" ); document.write( "45t + 25t = 4025 \n" ); document.write( "

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