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If 3xm + 2ym - 2yn - 3xn = 0 and m≠n , then what is the value of y in

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Joined: 02 Sep 2009
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If 3xm + 2ym - 2yn - 3xn = 0 and m≠n , then what is the value of y in  [#permalink]

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New post 22 Aug 2018, 01:44
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A
B
C
D
E

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Question Stats:

61% (01:05) correct 39% (01:59) wrong based on 27 sessions

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WE: Supply Chain Management (Energy and Utilities)
Re: If 3xm + 2ym - 2yn - 3xn = 0 and m≠n , then what is the value of y in  [#permalink]

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New post 22 Aug 2018, 01:53
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Bunuel wrote:
If 3xm + 2ym - 2yn - 3xn = 0 and m≠n , then what is the value of y in terms of x?

A. −2x/3
B. −3x/2
C. −3x^2/2
D. 2x/3
E. 3x/2


Given, 3xm + 2ym - 2yn - 3xn = 0
Or, 2ym - 2yn+3xm-3xn=0
Or, 2y(m-n)+3x(m-n)=0
Or, (m-n)(2y+3x)=0

m≠n so, m-n≠0
Therefore 2y+3x must be equal to zero
Or, 2y+3x=0
Or, 2y=-3x
Or, y=−3x/2

Ans. (B)
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Re: If 3xm + 2ym - 2yn - 3xn = 0 and m≠n , then what is the value of y in   [#permalink] 22 Aug 2018, 01:53
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