Question 154978This question is from textbook
: 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 an hour for his assistant's labor. The plumber works twice as long as his assistant labor 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?This question is from textbook
: 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 an hour for his assistant's labor. The plumber works twice as long as his assistant labor 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? Answer by edjones(2401) (Show Source):
You can put this solution on YOUR website! Let p=plumber's time and a=assistants time
p=2a
45p+25a=4025
(45*2a)+25a=4025 Substitute.
90a+25a=4025
115a=4025
a=4025/115
=35hrs
p=70hrs
.
Ed
