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If 2x + y = 7 and x + 2y = 5, then (x + y)/3 =
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14 Oct 2015, 21:29
Question Stats:
87% (01:02) correct 13% (00:58) wrong based on 1375 sessions
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If 2x + y = 7 and x + 2y = 5, then (x + y)/3 = (A) 1 (B) 4/3 (C) 17/5 (D) 18/5 (E) 4 Kudos for a correct solution.
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Re: If 2x + y = 7 and x + 2y = 5, then (x + y)/3 =
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14 Oct 2015, 21:40
Bunuel wrote: If 2x + y = 7 and x + 2y = 5, then (x + y)/3 =
(A) 1 (B) 4/3 (C) 17/5 (D) 18/5 (E) 4
Kudos for a correct solution. We have two equations: 2x + y = 7 x + 2y = 5 Notice that something nice happens when we ADD them. We get: 3x + 3y = 12 Divide both sides by 3 to get: x + y = 4So, ( x + y)/3 = 4/3 Answer: B Cheers, Brent
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Re: If 2x + y = 7 and x + 2y = 5, then (x + y)/3 =
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14 Oct 2015, 21:34
x=3, y=1, so x+y/3=4/3
Ans:B



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Re: If 2x + y = 7 and x + 2y = 5, then (x + y)/3 =
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14 Oct 2015, 22:09
2x+y = 7 1 x +2y= 5 2 Adding equations 1 and 2 , we get 3x+3y=12 =>x+y=4 (x+y)/3 = 4/3 Answer B
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Re: If 2x + y = 7 and x + 2y = 5, then (x + y)/3 =
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15 Oct 2015, 11:11
3x + 3y = 12 Divide both sides by 9 to get: 4/3
Ans B



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Re: If 2x + y = 7 and x + 2y = 5, then (x + y)/3 =
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15 Oct 2015, 14:07
2*(x+2y = 5) equals 2x+4y=10 2x+4y=10  2x + y= 7 = 3y=3 Therefore Y = 1
Plug and solve...
2x + 1 = 7 2x=6 x=3
(3+1)/3= 4/3



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Re: If 2x + y = 7 and x + 2y = 5, then (x + y)/3 =
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15 Oct 2015, 20:51
Bunuel wrote: If 2x + y = 7 and x + 2y = 5, then (x + y)/3 =
(A) 1 (B) 4/3 (C) 17/5 (D) 18/5 (E) 4
Kudos for a correct solution. Adding the 2 equations 3x + 3y= 12 Dividing both sides by 3 X+y=12/3 Again dividing both sides by 3 (X+y)/3=4/3



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If 2x + y = 7 and x + 2y = 5, then (x + y)/3 =
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16 Oct 2015, 03:07
Bunuel wrote: If 2x + y = 7 and x + 2y = 5, then (x + y)/3 =
(A) 1 (B) 4/3 (C) 17/5 (D) 18/5 (E) 4
Kudos for a correct solution. My Solution:
2x+y=7  (1) and x+2y=5 >(2)
Solving eqn. (1) & (2) we get x = 3 and y = 1,
Therefore, x+y/3 will be (3+1)/ 3
Answer = 4/3 Option B
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Re: If 2x + y = 7 and x + 2y = 5, then (x + y)/3 =
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28 Dec 2016, 10:07
Multiply 2nd equation with 2, on solving 3y = 3 y =1 Substitute, x = 3 \(\frac{4}{3}\) B
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Re: If 2x + y = 7 and x + 2y = 5, then (x + y)/3 =
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18 Mar 2018, 07:09
Bunuel wrote: If 2x + y = 7 and x + 2y = 5, then (x + y)/3 =
(A) 1 (B) 4/3 (C) 17/5 (D) 18/5 (E) 4
Kudos for a correct solution. Add both equations: 3x + 3y = 12 3 (x + y) = 12 x + y = 4 (x + y)/3 4/3 (B)
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Re: If 2x + y = 7 and x + 2y = 5, then (x + y)/3 =
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18 Mar 2018, 08:10
Bunuel wrote: If 2x + y = 7 and x + 2y = 5, then (x + y)/3 =
(A) 1 (B) 4/3 (C) 17/5 (D) 18/5 (E) 4
Kudos for a correct solution. 2x + y = 7.............1 x + 2y = 5.............2 Sum the 2 eqautions 3x +3 y = 12 .................Divide by 3 x + y =4........................ divide by 3 (x + y)/3 =4/3 Answer: B




Re: If 2x + y = 7 and x + 2y = 5, then (x + y)/3 =
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18 Mar 2018, 08:10






