antschilt8059 antschilt8059

26-03-2018
Mathematics

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A plumper charges $55 for a service call plus $35 per hour if the plumbers bill is $160 how many hour's was he thete

Respuesta :

26-03-2018

h= number of hours worked
Total= $160
Service call= $55
Hourly cost= $35

Total bill equals service call plus (hourly cost multiplied by number of hours worked)

$160= $35h + $55
subtract 55 from both sides
105= 35h
divide both sides by 35
3= h

ANSWER: The plumber worked 3 hours.

Hope this helps! :)

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