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If the ceilings and walls of the living room, dining room, k

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If the ceilings and walls of the living room, dining room, k [#permalink] New post 12 Jun 2018, 07:45
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Attachment:
plan.jpg
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The figure above shows the plan for the ground floor of a house. The thickness of the walls should be ignored in answering the questions. The dimensions are in feet, and each region is rectangular

If the ceilings and walls of the living room, dining room, kitchen, and hall are to be painted, how many square feet must be painted?

(A) \(231 \frac{1}{4}\)

(B) \(324\)

(C) \(333\)

(D) \(380 \frac{1}{4}\)

(E) It cannot be determined from the information given.
[Reveal] Spoiler: OA

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Re: If the ceilings and walls of the living room, dining room, k [#permalink] New post 02 Jul 2018, 21:06
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Carcass wrote:
Attachment:
plan.jpg


The figure above shows the plan for the ground floor of a house. The thickness of the walls should be ignored in answering the questions. The dimensions are in feet, and each region is rectangular

If the ceilings and walls of the living room, dining room, kitchen, and hall are to be painted, how many square feet must be painted?

(A) \(231 \frac{1}{4}\)

(B) \(324\)

(C) \(333\)

(D) \(380 \frac{1}{4}\)

(E) It cannot be determined from the information given.


Here;

when we look into the diagram we find the length of the floor area = 18 (We donot need to calculate the area of porch)

Moreover the breadth of the porch = \(4\frac{1}{2}\) ; but we have no information of the length of the porch without which we won't be able to calculate the area of the floor except the porch.

i.e. if we only consider the total floor area i.e length = 18 feet and width = \(18\frac{1}{2}\) {That includes some part of porch area}

Then the area = \(18 * 18\frac{1}{2}\) = 333.

Now we need to subtract the porch area, but we have the breadth but we cannot calculate the length, hence we cannot compute the total area that required painting

Hence the option is E.
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Re: If the ceilings and walls of the living room, dining room, k   [#permalink] 02 Jul 2018, 21:06
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