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The table shows the number of shares of each of the 5 stocks owned by [#permalink]

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08 Apr 2012, 00:49

10

This post was BOOKMARKED

00:00

A

B

C

D

E

Difficulty:

15% (low)

Question Stats:

72% (00:48) correct 28% (00:40) wrong based on 458 sessions

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Stock / Number of shares V ------------ 68 W ---------- 112 X ------------ 56 Y ------------ 94 Z ------------ 45

The table shows the number of shares of each of the 5 stocks owned by Mr Sami. If Mr. Sami was to sell 20 shares of Stock X and buy 24 shares of stock Y, what would be the increase in the range of the numbers of shares of the 5 stocks owned by Mr. Sami?

Stock / Number of shares V ------------ 68 W ---------- 112 X ------------ 56 Y ------------ 94 Z ------------ 45

The table shows the number of shares of each of the 5 stocks owned by Mr Sami. If Mr. Sami was to sell 20 shares of Stock X and buy 24 shares of stock Y, what would be the increase in the range of the numbers of shares of the 5 stocks owned by Mr. Sami?

A. 4 B. 6 C. 9 D. 15 E. 20

Can someone please explain this in detail? My answer was A, but it is wrong...

Original range = (highest #) - (lowest #) = W - Z = 112 - 45 = 67;

After selling/buying: X=56-20=36 and Y=94+24=118;

New range = (new highest #) - (new lowest #) = Y - X = 118-36 = 82;

Difference = New range - Original range = 82 - 67 = 15.

Re: The table shows the number of shares of each of the 5 stocks owned by [#permalink]

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20 Jun 2012, 13:33

I had this question on my practice test yesterday and I fell for very basic GMAT trap. Detail.. It says Mr. Sami "bought" 24 shares of Y, and I read sold and did the whole problem and got the answer 9. grrrrr, I hope I don't do these mistakes on my real GMAT on Saturday.

"Range" questions come from the broader category of statistics, which will show up a couple of times on the GMAT. The range of a group of numbers is the difference between the largest number and the smallest number.

Based on the original number of shares, the range would be: 112 - 45 = 67

However, the prompt tells us that two of the values in the table are going to change. After the changes, the values will be:

V 68 W 112 X 36 Y 118 Z 45

Now the range is 118 - 36 = 82

The INCREASE in the range requires us to compare the "new" range to the "old" range: 82 - 67 = 15

Re: The table shows the number of shares of each of the 5 stocks owned by [#permalink]

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23 Jul 2016, 06:59

piyushksharma wrote:

Stock / Number of shares V ------------ 68 W ---------- 112 X ------------ 56 Y ------------ 94 Z ------------ 45

The table shows the number of shares of each of the 5 stocks owned by Mr Sami. If Mr. Sami was to sell 20 shares of Stock X and buy 24 shares of stock Y, what would be the increase in the range of the numbers of shares of the 5 stocks owned by Mr. Sami?

A. 4 B. 6 C. 9 D. 15 E. 20

Current range = highest - lowest --->112-45 = 67

After selling 20 shares of X and buying 24 shares of Y , the new share composition will be V = 68 No change W= 112 No change X= 36 (because 56-20=36) Y =118 (because 94+24 =118) Z = 45No change

Now new range = highest - lowest ----> 118- 36= 82

Increase = new range -old range = 82-67 = 15

ANSWER IS D
_________________

Posting an answer without an explanation is "GOD COMPLEX". The world doesn't need any more gods. Please explain you answers properly. FINAL GOODBYE :- 17th SEPTEMBER 2016. .. 16 March 2017 - I am back but for all purposes please consider me semi-retired.

Re: The table shows the number of shares of each of the 5 stocks owned by [#permalink]

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23 Dec 2017, 12:03

piyushksharma wrote:

Stock / Number of shares V ------------ 68 W ---------- 112 X ------------ 56 Y ------------ 94 Z ------------ 45

The table shows the number of shares of each of the 5 stocks owned by Mr Sami. If Mr. Sami was to sell 20 shares of Stock X and buy 24 shares of stock Y, what would be the increase in the range of the numbers of shares of the 5 stocks owned by Mr. Sami?

A. 4 B. 6 C. 9 D. 15 E. 20

Number of shares we start with: V ------------ 68 W ---------- 112 X ------------ 56 Y ------------ 94 Z ------------ 45

After selling 20 shares of stock x and buying 24 shares of Y we have the following number of shares V ------------ 68 W ---------- 112 X ------------ 36 Y ------------ 118 Z ------------ 45

Range is largest number in set minus smallest number in set so original range: 112-45= 67 New range: 118-36= 82 82-67= 15 which is the increase from the original range to new range