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If the number of members in the club C is 100, what is the value of x?

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Kudos [?]: 2 [0], given: 128

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If the number of members in the club C is 100, what is the value of x? [#permalink]

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New post 11 Nov 2017, 05:26
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Question Stats:

54% (01:04) correct 46% (01:55) wrong based on 28 sessions

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The table below represents the relationship between ages and the number of members in a certain club C

Image

If the number of members in the club C is 100, what is the value of x?

(1) The median age of the members in the club C is 30.5 years old
(2) y = 17

[Reveal] Spoiler:
Attachment:
Statistics.PNG
Statistics.PNG [ 21.86 KiB | Viewed 158 times ]

Attachment:
2017-11-11_1628.png
2017-11-11_1628.png [ 45.77 KiB | Viewed 213 times ]
[Reveal] Spoiler: OA

Last edited by Bunuel on 11 Nov 2017, 05:31, edited 1 time in total.
Renamed the topic and edited the question.

Kudos [?]: 2 [0], given: 128

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Joined: 02 Aug 2009
Posts: 5234

Kudos [?]: 5889 [1], given: 118

If the number of members in the club C is 100, what is the value of x? [#permalink]

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New post 11 Nov 2017, 06:22
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Expert's post
sunny91 wrote:
The table below represents the relationship between ages and the number of members in a certain club C

Image

If the number of members in the club C is 100, what is the value of x?

(1) The median age of the members in the club C is 30.5 years old
(2) y = 17

[Reveal] Spoiler:
Attachment:
Statistics.PNG

Attachment:
2017-11-11_1628.png




Hi...
total members are 100..
(1) The median age of the members in the club C is 30.5 years old.
Possible that it would look to few that this is not sufficient. BUT always work a bit on the sentence
Median age as 30.5 means that it is average of 50 and 51 person..
BUT 30.5 is also the MIDDLE of the age. so what does it tell us ...
It tells us that half are above 50 and half below 50..
so 26+x+4+6=50........36+x=50....x=14
suff
Ofcourse you can find y also 27+y+6 = 50....y=17

(2) y = 17

straight suff...
as two variables x and y..
y is known we can find x
suff

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Kudos [?]: 5889 [1], given: 118

If the number of members in the club C is 100, what is the value of x?   [#permalink] 11 Nov 2017, 06:22
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If the number of members in the club C is 100, what is the value of x?

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