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How many Chocolate Candy Bars must Cindy purchase in order to end up w
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04 Mar 2024, 04:39
04 Mar 2024, 04:39
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Question Stats:
75% (03:19) correct
25% (02:53) wrong based on 4 sessions
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How many Chocolate Candy Bars must Cindy purchase in order to end up with a median price of $1.88?
A. 1
B. 2
C. 3
D. 4
E. 0
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Free Materials for the GRE General Exam - Where to get it!!
GRE Geometry Formulas
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Re: How many Chocolate Candy Bars must Cindy purchase in order to end up w
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04 Mar 2024, 10:58
04 Mar 2024, 10:58
1
First, sort the items by price. Let x = the number of Chocolate Candy Bars that Cindy must purchase.
cookies.png [ 15.1 KiB | Viewed 1133 times ]
Since we need the median to be $1.88, and there's not an item with that exact price, it must be an average between the items that cost 1.76 and 2.00. (This also hints that there's an even number of items total.)
The median is the middle number in a sorted list, so exactly half of the total number of items will be 2.00 and above, and the other half will cost 1.76 or below.
There are 12 items that are priced 2.00 and above.
There are (x + 10) items that are priced 1.76 and below.
x+10 = 12
x = 2
Attachment:
cookies.png [ 15.1 KiB | Viewed 1133 times ]
Since we need the median to be $1.88, and there's not an item with that exact price, it must be an average between the items that cost 1.76 and 2.00. (This also hints that there's an even number of items total.)
The median is the middle number in a sorted list, so exactly half of the total number of items will be 2.00 and above, and the other half will cost 1.76 or below.
There are 12 items that are priced 2.00 and above.
There are (x + 10) items that are priced 1.76 and below.
x+10 = 12
x = 2
gmatclubot
Re: How many Chocolate Candy Bars must Cindy purchase in order to end up w [#permalink]
04 Mar 2024, 10:58
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