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# If wx=y , what is the value of xy ? 1. wx^2 = 16 2. y = 4

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If wx=y , what is the value of xy ? 1. wx^2 = 16 2. y = 4 [#permalink]

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12 Nov 2006, 13:17
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If wx=y , what is the value of xy ?

1. wx^2 = 16

2. y = 4
SVP
Joined: 05 Jul 2006
Posts: 1747
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Kudos [?]: 358 [0], given: 49

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12 Nov 2006, 13:26
If wx=y , what is the value of xy ?

1. wx^2 = 16

2. y = 4

WX=Y MULTIPLY WHOLE EXPRESSION BY X

WX^2 = YX= 16 A IS SUFF

FROM TWO NOT SUFF

GMAT Club Legend
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Location: Singapore
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12 Nov 2006, 22:37
St1:

wx^2 = 16
wx(x) = 16
xy = 16. Sufficient.

St2:
y = 4. Insufficient.

Ans A
12 Nov 2006, 22:37
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# If wx=y , what is the value of xy ? 1. wx^2 = 16 2. y = 4

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