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GMAT club test - Algebra 1 qn 10 - help [#permalink]
23 Oct 2009, 15:19
What is in terms of ?
What is y in terms of x?
1) 1/ x/y+y/x = 1/2 2) x/y-y/x = 0
(C) 2008 GMAT Club - Algebra - I#10
Statement (1) ALONE is sufficient, but Statement (2) ALONE is not sufficient Statement (2) ALONE is sufficient, but Statement (1) ALONE is not sufficient BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient EACH statement ALONE is sufficient Statements (1) and (2) TOGETHER are NOT sufficient The OA is A but , i think both the statements answer the question
statement 2 - x/y - y/x = 0
we can write this as sqr(x) - sqr(y) = 0, which can say y = +- X
why is this not sufficient.could someone please explain