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The table above shows the distance, in kilometers, by the

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The table above shows the distance, in kilometers, by the [#permalink] New post 18 Sep 2012, 02:32
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The table above shows the distance, in kilometers, by the most direct route, between any two of the four cities, R, S, T, and U. For example, the distance between City R and City U is 62 kilometers. What is the value of x ?

(1) By the most direct route, the distance between S and T is twice the distance between S and R.
(2) By the most direct route, the distance between T and U is 1.5 times the distance between Rand T.

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Re: The table above shows the distance, in kilometers, by the [#permalink] New post 19 Sep 2012, 23:44
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X=?

(1) interpreting the chart plus the statement: 56 = 2 (y)
INSUFFICIENT bec we don't know anything about x and it's relationship to y.
(2) 69 = 1.5x, SUFFICIENT

Answer: B
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Re: The table above shows the distance, in kilometers, by the [#permalink] New post 18 Sep 2012, 02:32
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SOLUTION

Image
The table above shows the distance, in kilometers, by the most direct route, between any two of the four cities, R, S, T, and U. For example, the distance between City R and City U is 62 kilometers. What is the value of x ?

(1) By the most direct route, the distance between S and T is twice the distance between S and R. We can find the value of y, which will be ST=56=2y --> y=28. But we have no information about x. Not sufficient.

(2) By the most direct route, the distance between T and U is 1.5 times the distance between R and T. TU=69=1.5x --> x=46. Sufficient.

Answer: B.
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COLLECTION OF QUESTIONS:
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Re: The table above shows the distance, in kilometers, by the [#permalink] New post 18 Sep 2012, 06:04
Bunuel wrote:
Attachment:
Table.png
The table above shows the distance, in kilometers, by the most direct route, between any two of the four cities, R, S, T, and U. For example, the distance between City R and City U is 62 kilometers. What is the value of x ?

(1) By the most direct route, the distance between Sand T is twice the distance between Sand R.
(2) By the most direct route, the distance between T and U is 1.5 times the distance between Rand T.



1) from graph the distance between S and T gives the value of y, hence not sufficient
2) this gives value of x, hence sufficient.

Hence B
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Re: The table above shows the distance, in kilometers, by the [#permalink] New post 21 Sep 2012, 03:19
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SOLUTION

Image
The table above shows the distance, in kilometers, by the most direct route, between any two of the four cities, R, S, T, and U. For example, the distance between City R and City U is 62 kilometers. What is the value of x ?

(1) By the most direct route, the distance between S and T is twice the distance between S and R. We can find the value of y, which will be ST=56=2y --> y=28. But we have no information about x. Not sufficient.

(2) By the most direct route, the distance between T and U is 1.5 times the distance between R and T. TU=69=1.5x --> x=46. Sufficient.

Answer: B.

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Re: The table above shows the distance, in kilometers, by the [#permalink] New post 01 Aug 2013, 13:09
The table above shows the distance, in kilometers, by the most direct route, between any two of the four cities, R, S, T, and U. For example, the distance between City R and City U is 62 kilometers. What is the value of x ?


R S T U
R 0 28 x 62

S 28 0 56 75

T x 56 0 69

U 62 75 69 0

(1) By the most direct route, the distance between S and T is twice the distance between S and R.
y = 28
This tells us nothing about x.
INSUFFICIENT

(2) By the most direct route, the distance between T and U is 1.5 times the distance between R and T.
tu distance = 69
tu = 1.5(rt)
69 = 1.5(rt)
46=rt
The distance between r and t on the graph = x, therefore, x=46.
SUFFICIENT

(B)
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Re: The table above shows the distance, in kilometers, by the [#permalink] New post 02 Aug 2014, 14:16
for statement 1 - if you know that RS is 28 and ST is 56, why is it incorrect to assume that RT is 28+56?
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Re: The table above shows the distance, in kilometers, by the [#permalink] New post 02 Aug 2014, 14:21
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jaw4527 wrote:
for statement 1 - if you know that RS is 28 and ST is 56, why is it incorrect to assume that RT is 28+56?


It would be the distance through S, but there might be a shorter direct route.
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NEW TO MATH FORUM? PLEASE READ THIS: ALL YOU NEED FOR QUANT!!!

PLEASE READ AND FOLLOW: 11 Rules for Posting!!!

RESOURCES: [GMAT MATH BOOK]; 1. Triangles; 2. Polygons; 3. Coordinate Geometry; 4. Factorials; 5. Circles; 6. Number Theory; 7. Remainders; 8. Overlapping Sets; 9. PDF of Math Book; 10. Remainders; 11. GMAT Prep Software Analysis NEW!!!; 12. SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) NEW!!!; 12. Tricky questions from previous years. NEW!!!;

COLLECTION OF QUESTIONS:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS ; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


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Re: The table above shows the distance, in kilometers, by the [#permalink] New post 02 Aug 2014, 15:28
Bunuel wrote:
jaw4527 wrote:
for statement 1 - if you know that RS is 28 and ST is 56, why is it incorrect to assume that RT is 28+56?


It would be the distance through S, but there might be a shorter direct route.


gotcha that makes sense, thanks for the reply bunuel
Re: The table above shows the distance, in kilometers, by the   [#permalink] 02 Aug 2014, 15:28
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