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C
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Difficulty:
5%
(low)
Question Stats:
95% (00:52) correct
5%
(00:49)
wrong
based on 120
sessions
History
Date
Time
Result
Not Attempted Yet
If x + 3y = 5 and 3x + y = 7, then x + y =
(A) 1
(B) 2
(C) 3
(D) 4
(E) 5
(A) 1
(B) 2
(C) 3
(D) 4
(E) 5
Mo2men
Joined: 26 Mar 2013
Last visit: 09 May 2023
Posts: 2,426
Own Kudos:
Given Kudos: 641
Concentration: Operations, Strategy
Schools: Erasmus (II)
Products:
01 Jun 2017, 12:58
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Bunuel
Summing up 2 equations as follows:
4x + 4y = 12
x + y = 3
Answer: C
19 Jun 2021, 09:55
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(3x + y = 7) + (x + 3y = 5)
=> 4x + 4y = 12
=> x + y = 3
Answer C
=> 4x + 4y = 12
=> x + y = 3
Answer C
