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Keep Cool Air-Conditioning charges $ 60 for the first 30 min
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29 Jul 2020, 10:35
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72% (01:43) correct
27% (01:51) wrong based on 61 sessions
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Keep Cool Air-Conditioning charges $ 60 for the first 30 minutes of every house call and $ 15 for each additional quarter hour. In addition, the customer has to pay for any required parts needed for repairs. If Mrs. Lewis’s bill was $ 225, which included $ 90 for parts, how long did the air-conditioning repair technician work?
Re: Keep Cool Air-Conditioning charges $ 60 for the first 30 min
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29 Jul 2020, 10:57
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If we remove $90 for parts and $60 for first 30 minutes, Mrs. Lewis has paid 225 - 90 - 60 = $75 for additional quarters. Since, each additional quarter cost him $15, no. of additional quarter = 75/15 = 5 => time in minutes = 30 + 5*15 = 105 minutes or 1 hour 45 minutes.