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# The cost to park a car in a certain parking garage is \$8.00

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The cost to park a car in a certain parking garage is \$8.00  [#permalink]

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12 Jan 2016, 06:26
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Difficulty:

15% (low)

Question Stats:

84% (01:41) correct 16% (01:38) wrong based on 109 sessions

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The cost to park a car in a certain parking garage is \$8.00 for up to 2 hours of parking and \$1.75 for each hour in excess of 2 hours. What is the average (arithmetic mean) cost per hour to park a car in the parking garage for 9 hours?

(A) \$1.09
(B) \$1.67
(C) \$2.25
(D) \$2.37
(E) \$2.50

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Re: The cost to park a car in a certain parking garage is \$8.00  [#permalink]

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12 Jan 2016, 06:34
BrainLab wrote:
The cost to park a car in a certain parking garage is \$8.00 for up to 2 hours of parking and \$1.75 for each hour in excess of 2 hours. What is the average (arithmetic mean) cost per hour to park a car in the parking garage for 9 hours?

(A) \$1.09
(B) \$1.67
(C) \$2.25
(D) \$2.37
(E) \$2.50

Total cost of parking for 9 hours = 8\$ for the first 2 hours and then 1.75 for (9-2) hours = 8+7*1.75 = 20.25

Thus the AVERAGE parking price = 20.25/9 = 2.25 \$

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Re: The cost to park a car in a certain parking garage is \$8.00  [#permalink]

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12 Jan 2016, 10:45
BrainLab wrote:
The cost to park a car in a certain parking garage is \$8.00 for up to 2 hours of parking and \$1.75 for each hour in excess of 2 hours. What is the average (arithmetic mean) cost per hour to park a car in the parking garage for 9 hours?

(A) \$1.09
(B) \$1.67
(C) \$2.25
(D) \$2.37
(E) \$2.50

First 2 hours ----> \$8.00
For next 7 hours ------>7 * \$1.75

For 9 Hours total cost is \$8.00 + \$12.25 =\$20.25

Average cost for 9 hours is 20.25/9 => \$2.25

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Re: The cost to park a car in a certain parking garage is \$8.00  [#permalink]

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07 Apr 2019, 18:29
BrainLab wrote:
The cost to park a car in a certain parking garage is \$8.00 for up to 2 hours of parking and \$1.75 for each hour in excess of 2 hours. What is the average (arithmetic mean) cost per hour to park a car in the parking garage for 9 hours?

(A) \$1.09
(B) \$1.67
(C) \$2.25
(D) \$2.37
(E) \$2.50

The total cost for 9 hour is:

8 + 1.75 x 7 = 8 + 12.25 = \$20.25

So the average cost per hour is 20.25/9 = \$2.25.

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Re: The cost to park a car in a certain parking garage is \$8.00   [#permalink] 07 Apr 2019, 18:29
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