Stock # 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 number of shares of the 5 stocks owned by Mr. Sami?
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Range Problem
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NeilWatson
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Hi NeilWatson,
"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: [spoiler]82 - 67 = 15[/spoiler]
GMAT assassins aren't born, they're made,
Rich
"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: [spoiler]82 - 67 = 15[/spoiler]
GMAT assassins aren't born, they're made,
Rich
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Anaira Mitch
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Check out below :-
Range before transaction:
112-45=67
Range after transaction:
(94+24)-(56-20)=118-36=82
The difference is: 82-67=15
Answer is D
Range before transaction:
112-45=67
Range after transaction:
(94+24)-(56-20)=118-36=82
The difference is: 82-67=15
Answer is D
