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If x + 5y = 16 and x = -3y
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carcass
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If x + 5y = 16 and x = -3y [#permalink] New post  22 May 2017, 12:50
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Question Stats:

97% (00:25) correct 3% (00:50) wrong based on 197 sessions

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If x + 5y = 16 and x = -3y, then y =

A) -24

B) -8

C) -2

D) 2

E) 8
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If x + 5y = 16 and x = -3y [#permalink] New post  22 May 2017, 17:45
carcass wrote:
If x + 5y = 16 and x = -3y, then y =

A) -24

B) -8

C) -2

D) 2

E) 8


x + 5y = 16 ------------(i)
x = -3y
Substituting x in (i)
-3y + 5y = 16
2y = 16
y = 8
Answer E...

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If x + 5y = 16 and x = -3y [#permalink] New post  23 Jun 2017, 17:03
carcass wrote:
If x + 5y = 16 and x = -3y, then y =

A) -24

B) -8

C) -2

D) 2

E) 8


x + 5y=16
-3y + 5y=16
2y=16
y=8
Hence, E
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Re: If x + 5y = 16 and x = -3y [#permalink] New post  24 Jun 2017, 13:13
\(x + 5y = 16\) ===> Eq. (1)

\(x = -3y\) ===> Eq. (2)

We will substitute the value of \(x\) Equation (2) in Equation (1)

\(-3y + 5y = 16\)

\(2y = 16\)

\(y = 8\)

Hence, Answer is E
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Re: If x + 5y = 16 and x = -3y [#permalink] New post  15 Sep 2019, 04:17
carcass wrote:
If x + 5y = 16 and x = -3y, then y =

A) -24

B) -8

C) -2

D) 2

E) 8


-3y + 5y = 16
y= 8

IMO E

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Re: If x + 5y = 16 and x = -3y [#permalink]
15 Sep 2019, 04:17
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