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

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Intern
Joined: 09 Sep 2006
Posts: 25

Kudos [?]: 1 [0], given: 0

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

Kudos [?]: 1 [0], given: 0

SVP
Joined: 05 Jul 2006
Posts: 1750

Kudos [?]: 430 [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

Kudos [?]: 430 [0], given: 49

GMAT Club Legend
Joined: 07 Jul 2004
Posts: 5036

Kudos [?]: 436 [0], given: 0

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

Kudos [?]: 436 [0], given: 0

12 Nov 2006, 22:37
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