- An equation that will lead to a single value
- Multiple equations that will allow you to solve for a single value
What is the value of x - 2y ?
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Statement (1) BY ITSELF is sufficient,
but statement (2) by itself is not sufficient. |
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Statement (2) BY ITSELF is sufficient,
but statement (1) by itself is not sufficient. |
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Both statements TAKEN TOGETHER
are sufficient, but NEITHER statement BY ITSELF is sufficient. |
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EACH statement BY ITSELF is sufficient. |
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The two statements TAKEN TOGETHER are NOT
sufficient.
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Countinue
Focus
on the question stem. F
irst, this is a value question, which means that a statement must provide
the values of each variable, or the value of the expression, to be sufficient.
Evaluate
each statement separately.
Statement (1) is insufficient. Make the equation in Statement (1) look
more like the question stem:
This statement does not provide enough information to answer the question.
The key is that you cannot use the equation
with the expression 
to find the value, because the latter is not an equation!
Statement (2) is sufficient. Make the equation in Statement (2) look
like the question stem:
Thus, Statement (2) provides the value of .
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