BTGmoderatorDC wrote: ↑Sun Feb 23, 2020 5:02 pm
Is x less than 20?
(1) The sum of x and y is less than 20.
(2) y is less than 20.
Target question: Is x less than 20?
When I scan the two statements, I can quickly see that neither statement alone is sufficient.
So let's jump straight to....
.
.
.
Statements 1 and 2 combined
There are several values of x and y that satisfy BOTH statements. Here are two:
Case a: x = 5 and y = 5. In this case, the answer to the target question is
YES, x is less than 20
Case b: x = 30 and y = -30. In this case, the answer to the target question is
NO, x is not less than 20
Since we cannot answer the
target question with certainty, the combined statements are NOT SUFFICIENT
Answer: E
Cheers,
Brent
