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GRE Prep Club Team Member
Joined: 20 Feb 2017
Posts: 2506
Given Kudos: 1055
GPA: 3.39
The figure above shows the inside dimensions, in feet, of a certain ro
[#permalink]
09 Mar 2022, 09:01
09 Mar 2022, 09:01
1
Expert Reply
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E
Question Stats:
28% (03:34) correct
71% (02:21) wrong based on 7 sessions
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The figure above shows the inside dimensions, in feet, of a certain room. An architect made a scale model of the room that had a floor and four walls, but not a ceiling. What was the scale of the model, in inches per foot, if the inside of the model had a total surface area of 2,304 square inches?
A. 0.25
B. 0.75
C. 1.8
D. 2
E. 4
Show: ::
Attachment:
2017-07-16_1619.png
GRE Prep Club Team Member
Joined: 20 Feb 2017
Posts: 2506
Given Kudos: 1055
GPA: 3.39
Re: The figure above shows the inside dimensions, in feet, of a certain ro
[#permalink]
10 Mar 2022, 10:35
10 Mar 2022, 10:35
1
Expert Reply
Since the model does not have a roof, let's find the surface area without a roof of ACTUAL room
16 *10 +2*8*10 + 2*8*16 = 576 sq feet
576 sq feet is represented by 2304 square inches.
so 1 sq feet is represented by 2304/576 = 4 square inches.
The answer has to be in inches per foot.
so if 1 sq feet is represented by 4 square inches.
1 foot will be represented by 2 inches[/b]
Answer is in inches per feet = 2 inches /1 feet = 2 inches per feet
Answer: D
16 *10 +2*8*10 + 2*8*16 = 576 sq feet
576 sq feet is represented by 2304 square inches.
so 1 sq feet is represented by 2304/576 = 4 square inches.
The answer has to be in inches per foot.
so if 1 sq feet is represented by 4 square inches.
1 foot will be represented by 2 inches[/b]
Answer is in inches per feet = 2 inches /1 feet = 2 inches per feet
Answer: D
gmatclubot
Re: The figure above shows the inside dimensions, in feet, of a certain ro [#permalink]
10 Mar 2022, 10:35
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