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A rectangular floor 18 feet by 10 feet is to be completely

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A rectangular floor 18 feet by 10 feet is to be completely [#permalink] New post 16 Dec 2016, 02:57
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Question Stats:

71% (00:29) correct 28% (00:27) wrong based on 7 sessions
A rectangular floor 18 feet by 10 feet is to be completely covered with carpeting that costs X dollars per square yard. In terms of X, how many dollars will the carpeting cost ? (1 yard = 3 feet)

(A) 20x
(B) 28x
(C) 60x
(D) 180x
(E) 540x
[Reveal] Spoiler: OA

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Re: A rectangular floor 18 feet by 10 feet is to be completely [#permalink] New post 29 Sep 2017, 08:24
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The area of the floor is 10*18 = 180 square feet. Then, in square yards, it will be 180/9 = 20. Thus, the carpet will cost 20X dollars.

Answer A
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Re: A rectangular floor 18 feet by 10 feet is to be completely [#permalink] New post 05 Jan 2018, 06:54
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Carcass wrote:
A rectangular floor 18 feet by 10 feet is to be completely covered with carpeting that costs X dollars per square yard. In terms of X, how many dollars will the carpeting cost ? (1 yard = 3 feet)

(A) 20x
(B) 28x
(C) 60x
(D) 180x
(E) 540x


The area of the floor is 18 x 10 = 180 ft^2. Since 1 yd = 3 ft, 1 yd^2 = 3^2 ft^2 = 9 ft^2. Thus, the area of the floor is 180/9 = 20 yd^2. Since each square yard costs x dollars in carpeting, the entire floor costs 20x in carpeting.

Answer: A
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Re: A rectangular floor 18 feet by 10 feet is to be completely   [#permalink] 05 Jan 2018, 06:54
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