Bunuel
If R, S, and T are points on a line, and if R is 5 meters from T and 2 meters from S, how far is S from T ?
(1) R is between S and T.
(2) S is to the left of R, and T is to the right of R.
DS04602.0
OG2020 NEW QUESTION
We are given the distance from R to T and from R to S; and we need to determine the distance from S to T. To be able to determine the distance from S to T, we need to know in what order R, S and T are positioned on the line.
Statement One Alone:
R is between S and T.
Since R is between S and T, the distance between S and T is equal to the sum of the distances from R to T and from R to S. Since we are given both of those distances, we have enough information to calculate the distance from S to T. Statement one alone is sufficient.
Eliminate answer choices B, C and E.
Statement Two Alone:
S is to the left of R, and T is to the right of R.
Notice that this could only happen if R is between S and T. If R is not between S and T, either both S and T are to the left of R or both S and T are to the right of R. Since we know R is between S and T, we can proceed as in the previous statement to calculate the distance between S and T. Statement two alone is sufficient.
Eliminate answer choice A.
Answer: D