BTGmoderatorDC wrote:What is the ratio of x:y:z?
(1) xy = 14
(2) yz = 21
Target question: What is the ratio of x:y:z?
Statement 1: xy = 14
In information about z
Statement 1 is NOT SUFFICIENT
Statement 2: yz = 21
In information about x
Statement 2 is NOT SUFFICIENT
Statements 1 and 2 combined
There are several values of x, y and z that satisfy BOTH statements. Here are two:
Case a: x = 2, y = 7 and z = 3. In this case, the answer to the target question is
the ratio of x:y:z = 2:7:3
Case b: x = 14, y = 1 and z = 21. In this case, the answer to the target question is
the ratio of x:y:z = 14:1:21
Since we cannot answer the
target question with certainty, the combined statements are NOT SUFFICIENT
Answer: E
Cheers,
Brent
