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If x + 3y = 5 and 3x + y = 7, then x + y =

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Math Expert
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If x + 3y = 5 and 3x + y = 7, then x + y =  [#permalink]

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New post Updated on: 07 Jul 2019, 00:20
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

97% (00:40) correct 3% (00:48) wrong based on 29 sessions

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Originally posted by Bunuel on 01 Jun 2017, 11:56.
Last edited by SajjadAhmad on 07 Jul 2019, 00:20, edited 1 time in total.
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Re: If x + 3y = 5 and 3x + y = 7, then x + y =  [#permalink]

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New post 01 Jun 2017, 11:58
Bunuel wrote:
If x + 3y = 5 and 3x + y = 7, then x + y =

(A) 1
(B) 2
(C) 3
(D) 4
(E) 5



Summing up 2 equations as follows:

4x + 4y = 12

x + y = 3

Answer: C
GMAT Club Bot
Re: If x + 3y = 5 and 3x + y = 7, then x + y =   [#permalink] 01 Jun 2017, 11:58
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If x + 3y = 5 and 3x + y = 7, then x + y =

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