Seudónimo Seudónimo

24-04-2017
Mathematics

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A plumber charges $55 per hour plus a $9 service fee if the plumber earns $255 how many hours did he work?

Respuesta :

24-04-2017

The plumber worked for 4.5 hours.
55*4.5=247.5
247.5+9=256.5

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