document.write( "Question 891087: A plumber and his assistant work together to replace he pipes in an old house. The plumber charges $45 an hour for his own labor and $25 an hour for his assistant's labor. The plumber works twice as long as 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 #539507 by lwsshak3(11628)![]() ![]() ![]() You can put this solution on YOUR website! A plumber and his assistant work together to replace he pipes in an old house. The plumber charges $45 an hour for his own labor and $25 an hour for his assistant's labor. The plumber works twice as long as 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( "*** \n" ); document.write( "let x=hrs assistant worked on job \n" ); document.write( "2x=hrs plumber worked on job \n" ); document.write( "25x+45*2x=4025 \n" ); document.write( "25x+90x=4025 \n" ); document.write( "115x=4025 \n" ); document.write( "x=35 \n" ); document.write( "2x=70 \n" ); document.write( "hrs assistant worked on job=35 \n" ); document.write( "hrs plumber worked on job=70 \n" ); document.write( " |