Make a plumber charges $40 per hour plus $50 for making the in-home visit the plumbing service charges $60 per hour but no set fee for a visit how many hours of plumbing work I need it for used to cost the same

MP=40x+50
PS=60x
40x+50=60x
-40x -40x
50=20x
50/20=20/20
x=2.5 hrs.
The cost will be the same at 2.5 hrs.