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The point A, B, C, and D are on the number line, not necessa [#permalink]
27 Mar 2009, 10:25

1

This post was BOOKMARKED

00:00

A

B

C

D

E

Difficulty:

55% (hard)

Question Stats:

66% (01:46) correct
34% (00:55) wrong based on 155 sessions

The point A, B, C, and D are on the number line, not necessarily in that order. If the distance between A and B is 18 and the distance between C and D is 8, what is the distance between B and D?

(1) The distance between C and A is the same as the distance between C and B. (2) A is to the left of D on the number line.

Re: DS GMAT points on number line [#permalink]
27 Mar 2009, 14:50

Accountant wrote:

Points A, B, C and D are on the number line, not necessarily in that order. If the distance between A and B is 18 and the distance between C& D is 8, what is the distance between C & D

1) Distance between C & A is same as distance between C & B. 2) A is to the left of the line.

Accountant, you have given the answer in the question itself, isn't it? _________________

Re: DS GMAT points on number line [#permalink]
27 Mar 2009, 17:31

Sorry about that, question requires distance between B & D.

Points A, B, C and D are on the number line, not necessarily in that order. If the distance between A and B is 18 and the distance between C& D is 8, what is the distance between B & D

1) Distance between C & A is same as distance between C & B. 2) A is to the left of the line.

Re: DS GMAT points on number line [#permalink]
27 Mar 2009, 18:14

Accountant wrote:

Sorry about that, question requires distance between B & D.

Points A, B, C and D are on the number line, not necessarily in that order. If the distance between A and B is 18 and the distance between C& D is 8, what is the distance between B & D

1) Distance between C & A is same as distance between C & B. 2) A is to the left of the line.

What does it mean: "A is to the left of the line"? Does the stmnt 2 read correctly? I think something is missing there. Anyhow, I think that depending on what is missing in the statement, the answer is likely C, and BD is either 1 or 17.

Re: DS GMAT points on number line [#permalink]
27 Mar 2009, 21:19

1

This post received KUDOS

Answer is E.

Stmt 1: Tell us that the C lies in the center between A and B. Nothing about direction of A or B or if D is to the left or right of C. Insufficient. Stmt 2: A is to the left of the line i.e left of B. Insufficient.

Combine: Tell us where all the point lies but does not tell that if D it to the left or right so Insufficient.

Re: DS GMAT points on number line [#permalink]
28 Mar 2009, 00:15

From statement 1, C is in between A and B - so it could be that C is 9 from A and C is 9 from B. It already says that between C and D it is 8 - but it doesn't say where D is - so we can't get the distance between D and B.

From statement 2, A is to the left of B - thats all the information. So it is insufficient.

We are down to C and E. When we take it together - again we don't know where D is - so we can't find B and D distance - so insufficient.

Re: DS GMAT points on number line [#permalink]
28 Mar 2009, 03:21

Sorry, I really messed this up while typing. A is to the left of D on the number line.

Points A, B, C and D are on the number line, not necessarily in that order. If the distance between A and B is 18 and the distance between C& D is 8, what is the distance between C & D

1) Distance between C & A is same as distance between C & B. 2) A is to the left of D on the number line.

Re: DS GMAT points on number line [#permalink]
28 Mar 2009, 03:46

Well, I did it again. Apparently I can't type. I sincerly apologize.

Points A, B, C and D are on the number line, not necessarily in that order. If the distance between A and B is 18 and the distance between C& D is 8, what is the distance between B & D

1) Distance between C & A is same as distance between C & B. 2) A is to the left of D on the number line.

Re: DS GMAT points on number line [#permalink]
28 Mar 2009, 06:34

Well doesn't the answer still remain E A is left of D could mean either D is left of C or right of C - if it is right of C, distance between B and D is 1, if it is left of C, it would be 17.

Re: Points A, B, C and D are on the number line, not necessarily [#permalink]
27 May 2014, 06:26

Please update the question! statement 2 is misleading. here's the question: The point A, B, C, and D are on the number line, not necessarily in the order. If the distance between A and B is 18 and the distance between C and D is 8, what is the distance between B and D? 1). The distance between C and A is the same as the distance between C and B. 2). A is to the left of D on the number line.

Re: Points A, B, C and D are on the number line, not necessarily [#permalink]
27 May 2014, 06:44

Expert's post

paranoidvik wrote:

Please update the question! statement 2 is misleading. here's the question: The point A, B, C, and D are on the number line, not necessarily in the order. If the distance between A and B is 18 and the distance between C and D is 8, what is the distance between B and D? 1). The distance between C and A is the same as the distance between C and B. 2). A is to the left of D on the number line.

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