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If the figure above represented the corner of a cube, the value of x +

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If the figure above represented the corner of a cube, the value of x +  [#permalink]

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New post 27 Jul 2017, 01:49
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If the figure above represented the corner of a cube, the value of x + y + z would be how much less than it would be if the figure represented three angles in a plane?

(A) 30
(B) 45
(C) 90
(D) 180
(E) 360


Attachment:
2017-07-27_1248.png
2017-07-27_1248.png [ 2.32 KiB | Viewed 679 times ]

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Re: If the figure above represented the corner of a cube, the value of x +  [#permalink]

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New post 27 Jul 2017, 02:03
Bunuel wrote:
Image
If the figure above represented the corner of a cube, the value of x + y + z would be how much less than it would be if the figure represented three angles in a plane?

(A) 30
(B) 45
(C) 90
(D) 180
(E) 360


If the image represented the corner of a cube, then x=y=z=90 degree. Hence x+y+z=270.

If the image represented three angles in a plane, then x+y+z=180.

Hence 270 - 180 = 90.

The answer is C
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Re: If the figure above represented the corner of a cube, the value of x +  [#permalink]

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New post 27 Jul 2017, 03:42
Bunuel wrote:
Image
If the figure above represented the corner of a cube, the value of x + y + z would be how much less than it would be if the figure represented three angles in a plane?

(A) 30
(B) 45
(C) 90
(D) 180
(E) 360


Attachment:
2017-07-27_1248.png


If three angles of a corner of a cube = 90+90+90 = 270
If three angles in a plane = 360

how much less than it would be if the figure represented three angles in a plane
360-270 = 90
Answer C
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Re: If the figure above represented the corner of a cube, the value of x +   [#permalink] 27 Jul 2017, 03:42
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