When wiring a house, an electrician knows that the time she by the Time = 2 hours + 12 minutes per lightswitch She charges her customers a call-out fee of £35, plus £30 per hour. How much should a customer be charged for wiring a house with 10 lightswitches?
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Home » Mathematics » When wiring a house, an electrician knows that the time she by the Time = 2 hours + 12 minutes per lightswitch She charges her customers a call-out fee of £35, plus £30 per hour.