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In the figure above, three angles with degree measures r, s, t are gro

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In the figure above, three angles with degree measures r, s, t are gro  [#permalink]

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New post 28 Jul 2017, 01:07
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A
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In the figure above, three angles with degree measures r, s, t are grouped together to form angles X (r + s + t), Y (r + s) and Z (s + t). Which of the following is the sum of the degree measures of angles X, Y and Z?

(A) r + 2s + t
(B) 2r + 3s + t
(C) 2r + 3s + 2t
(D) 3r + 2s + 3t
(E) 3r + 3s + 3t

Attachment:
2017-07-28_1148_002.png
2017-07-28_1148_002.png [ 4.94 KiB | Viewed 957 times ]

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Re: In the figure above, three angles with degree measures r, s, t are gro  [#permalink]

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New post 28 Jul 2017, 02:42
Bunuel wrote:
Image
In the figure above, three angles with degree measures r, s, t are grouped together to form angles X (r + s + t), Y (r + s) and Z (s + t). Which of the following is the sum of the degree measures of angles X, Y and Z?

(A) r + 2s + t
(B) 2r + 3s + t
(C) 2r + 3s + 2t
(D) 3r + 2s + 3t
(E) 3r + 3s + 3t

Attachment:
2017-07-28_1148_002.png


It should be C

Adding up instances of smaller angles in the collective sum. \((r + s + t + r + s + s + t)\) --> \(2r + 3s + 2t\)
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Re: In the figure above, three angles with degree measures r, s, t are gro  [#permalink]

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New post 30 Jul 2017, 06:29
Add X,Y and Z = 2r+3s+2t
Answer C
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Re: In the figure above, three angles with degree measures r, s, t are gro   [#permalink] 30 Jul 2017, 06:29
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In the figure above, three angles with degree measures r, s, t are gro

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