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06 May 2016, 09:08
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E
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14%
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The range for a list of measurements equals the greatest measurement minus the least measurement. The two lists of measurements, \(X\) and \(Y\), combined consist of 30 measurements with a range of 25. What is the range for the measurements in list \(X\)?
1) The range for the 12 measurements in list \(Y\) is 20.
2) List \(X\) consists of 18 measurements.
1) The range for the 12 measurements in list \(Y\) is 20.
2) List \(X\) consists of 18 measurements.
Himanshu9818
GMAT 1: 640 Q50 V27
Posts: 47
06 May 2016, 09:35
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[quote="Sallyzodiac"]The range for a list of measurements equals the greatest measurement minus the least measurement. The two lists of measurements, \(X\) and \(Y\), combined consist of 30 measurements with a range of 25. What is the range for the measurements in list \(X\)?
1) The range for the 12 measurements in list Y is 20.
2) List X consists of 18 measurements.
answer to this question is E as both statements are not sufficient to tell you the answer
statement 1 tells that The range for the 12 measurements in list Y is 20 but that tell cannot tell you the range of x
take lowest number in list y= 1 and highest 21 and take all the nos in list x as 26. That will give you range of x =0
take lowest number in list y 1 and highest 21 and take lowest number in list x= 22 and highest =26 .That will give you range of x =4
two different answers so the statement is not sufficient.
statement tells only about the nos in list x but no additional information so not sufficient.
by combining both statements we are not able to get any answer.
1) The range for the 12 measurements in list Y is 20.
2) List X consists of 18 measurements.
answer to this question is E as both statements are not sufficient to tell you the answer
statement 1 tells that The range for the 12 measurements in list Y is 20 but that tell cannot tell you the range of x
take lowest number in list y= 1 and highest 21 and take all the nos in list x as 26. That will give you range of x =0
take lowest number in list y 1 and highest 21 and take lowest number in list x= 22 and highest =26 .That will give you range of x =4
two different answers so the statement is not sufficient.
statement tells only about the nos in list x but no additional information so not sufficient.
by combining both statements we are not able to get any answer.
General Discussion
28 Aug 2018, 03:14
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So we are given 2 lists, X and Y and we are given that the
1. the total number of measurements is 30. X(n) + Y(n) = 30.
2. Largest measurement - Smallest Measurement = 25
But we are not told the number of measurements in either X or Y. We also don't know whether the largest of smallest measurement of the combined range belongs to X or Y.
We need to find the largest measurement of X and the smallest measurement of X for our answer.
1) 1) The range for the 12 measurements in list Y is 20.
Okay so we know that Y has 12 measurements, therefore X has 18. And we know the Y(largest)-Y(smallest) = 20 INSUFFICIENT
2) List X consists of 18 measurements.
We are told the X consists of 18 elements. We already figured this out in Statement 1 as well. It again does not tell us anything further. INSUFFICIENT
Answer is E
1. the total number of measurements is 30. X(n) + Y(n) = 30.
2. Largest measurement - Smallest Measurement = 25
But we are not told the number of measurements in either X or Y. We also don't know whether the largest of smallest measurement of the combined range belongs to X or Y.
We need to find the largest measurement of X and the smallest measurement of X for our answer.
1) 1) The range for the 12 measurements in list Y is 20.
Okay so we know that Y has 12 measurements, therefore X has 18. And we know the Y(largest)-Y(smallest) = 20 INSUFFICIENT
2) List X consists of 18 measurements.
We are told the X consists of 18 elements. We already figured this out in Statement 1 as well. It again does not tell us anything further. INSUFFICIENT
Answer is E
