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Keep Cool Air-Conditioning charges $ 60 for the first 30 min
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29 Jul 2020, 10:35
29 Jul 2020, 10:35
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Question Stats:
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?
A. 1 hour and 15 minutes
B. 1 hour and 45 minutes
C. 2 hours
D. 2 hours and 15 minutes
E. 3 hours
Kudos for the right answer and explanation
A. 1 hour and 15 minutes
B. 1 hour and 45 minutes
C. 2 hours
D. 2 hours and 15 minutes
E. 3 hours
Kudos for the right answer and explanation
Re: Keep Cool Air-Conditioning charges $ 60 for the first 30 min
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29 Jul 2020, 10:57
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.
So, the answer is B.
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.
So, the answer is B.
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Re: Keep Cool Air-Conditioning charges $ 60 for the first 30 min
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03 Feb 2021, 01:13
03 Feb 2021, 01:13
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Total Charge = 60 (for first 30 mins) + 15 (for every 15 minutes) + Charge for Parts
Let, the number of Quarter-hours required be X
So, 225 = 60 + 15X + 90
Solve for X = 5
Therefore, total time = 30 minutes (initial) + 15 x 5 minutes = 105 minutes = 1 hour and 45 minutes
So, Option B
Let, the number of Quarter-hours required be X
So, 225 = 60 + 15X + 90
Solve for X = 5
Therefore, total time = 30 minutes (initial) + 15 x 5 minutes = 105 minutes = 1 hour and 45 minutes
So, Option B
