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A wall that is 12 feet wide and 10 feet high is to be painted. A black

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A wall that is 12 feet wide and 10 feet high is to be painted. A black [#permalink]

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New post 29 Sep 2017, 04:31
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A wall that is 12 feet wide and 10 feet high is to be painted. A blackboard that is 5 feet wide and 3 feet high is affixed to the wall and is the only portion of the wall that will not be painted. The area of the portion that will be painted is how many square feet?

(A) 28
(B) 30
(C) 45
(D) 49
(E) 105
[Reveal] Spoiler: OA

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Kudos [?]: 132595 [0], given: 12326

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Re: A wall that is 12 feet wide and 10 feet high is to be painted. A black [#permalink]

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New post 29 Sep 2017, 06:08
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Area of the wall = 12*10=120 sq feet
Area of the blackboard= 5*3=15 sq feet
Area of the wall to be painted = 120-15=105 sq feet
Ans E

Kudos [?]: 2 [1], given: 28

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Re: A wall that is 12 feet wide and 10 feet high is to be painted. A black [#permalink]

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New post 03 Oct 2017, 16:33
Bunuel wrote:
A wall that is 12 feet wide and 10 feet high is to be painted. A blackboard that is 5 feet wide and 3 feet high is affixed to the wall and is the only portion of the wall that will not be painted. The area of the portion that will be painted is how many square feet?

(A) 28
(B) 30
(C) 45
(D) 49
(E) 105


The total area of the wall is 12 x 10 = 120 ft^2 and the area of the blackboard is 5 x 3 = 15 ft^2.

Thus, the area of the wall that will be painted is 120 - 15 = 105 ft^2.

Answer: E
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Kudos [?]: 901 [0], given: 5

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Re: A wall that is 12 feet wide and 10 feet high is to be painted. A black [#permalink]

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New post 03 Oct 2017, 18:39
Area of wall= 12*10= 120 sq.ft
Area of Blackboard= 5*3= 15 sq.ft
Area of wall to be painted= 120-15= 105 sq.ft

Answer: E.

Kudos please if you like my explanation!
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Kudos [?]: 65 [0], given: 65

Re: A wall that is 12 feet wide and 10 feet high is to be painted. A black   [#permalink] 03 Oct 2017, 18:39
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A wall that is 12 feet wide and 10 feet high is to be painted. A black

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