Question

A plumber finished three jobs on Tuesday. The first two only cost the owner the $45 trip fee because they took very little time to complete. For the third job, the plumber charged the trip fee plus 6 times his hourly rate. If the plumber received a total of $303 for the day, what is the hourly rate?

Answer 1

x -hourly rate;
$45 · 2 + $45 + 6 x = $303
6 x = $303 - $135 = $168
x = $168 : 6 = $28
Answer: his hourly rate is $28. 

Answer 2

Answer:

x -hourly rate;

$45 · 2 + $45 + 6 x = $303

6 x = $303 - $135 = $168

x = $168 : 6 = $28

Answer: his hourly rate is $28