A plumber charges $55 per hour plus a $9 service fee if the plumber earns $255 how many hours did he work?
(1) Answers
The plumber worked for 4.5 hours. 55*4.5=247.5 247.5+9=256.5
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The plumber worked for 4.5 hours. 55*4.5=247.5 247.5+9=256.5