Hi All,

The 'algebra approach' to this DS question is pretty straight-forward (and an easy way to get to the correct answer). If you don't recognize that approach though, you can still answer this question by TESTing VALUES.

We're asked if AX = 6 - BX. This is a YES/NO question

Fact 1: A = B

IF....

X = 1

A = B = 3

Then the answer to the question is YES

IF....

X = 1

A = B = 1

Then the answer to the question is NO

Fact 1 is INSUFFICIENT

Fact 2: 2AX = 6

Simplifying, we know that AX = 3

IF...

X = 1

A = 3

B = 3

Then the answer to the question is YES

X = 1

A = 3

B = 2

Then the answer to the question is NO

Fact 2 is INSUFFICIENT

Combined, we know...

A = B

AX = 3

Since AX = 3 and A=B, we know that BX also = 3

Plugging those 'values' into the question gives us....

Is 3 = 6 - 3?

The answer is ALWAYS YES.

Combined, SUFFICIENT

Final Answer:

GMAT assassins aren't born, they're made,

Rich

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