BTGModeratorVI wrote: ↑Fri Mar 06, 2020 5:42 pm
What is the value of jk - mj?
(1) k - m = 7
(2) j = 11
Answer:
C
Source: Economist GMAT
Target question: What is the value of j(k - m)?
Statement 1: k – m = 7
If
k - m = 7, then j(k - m) = j(
7).
Since we don't know the value of j, we can't answer the
target question with certainty
Statement 1 is NOT SUFFICIENT
Statement 2: j = 11
If
j = 11, then j(k - m) =
11(k - m)
Since we don't know the value of (k - m), we can't answer the
target question with certainty
Statement 2 is NOT SUFFICIENT
Statements 1 and 2 combined
k - m = 7 and
j = 11, then j(k - m) =
11(
7) = 77
So the answer to the target question is
j(k - m) = 77
Since we can answer the
target question with certainty, the combined statements are SUFFICIENT
Answer: C
Cheers,
Brent
