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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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sunny91
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If the number of members in the club C is 100, what is the value of x? [#permalink] New post   Updated on: 11 Nov 2017, 05:31
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The table below represents the relationship between ages and the number of members in a certain club C



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

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Attachment:
2017-11-11_1628.png
2017-11-11_1628.png [ 45.77 KiB | Viewed 2936 times ]
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D

Originally posted by sunny91 on 11 Nov 2017, 05:26.
Last edited by Bunuel on 11 Nov 2017, 05:31, edited 1 time in total.
Renamed the topic and edited the question.
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chetan2u
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If the number of members in the club C is 100, what is the value of x? [#permalink] New post   11 Nov 2017, 06:22
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sunny91 wrote:
The table below represents the relationship between ages and the number of members in a certain club C



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

Show 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

D
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IanStewart
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Re: If the number of members in the club C is 100, what is the value of x? [#permalink] New post   12 Oct 2020, 11:09
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That is one of the strangest tables I've ever seen: the "number of children" who are 33 years old is 26?

Anyway, assuming all 100 "children" are listed in the table somewhere (something the question needs to say), if the median is halfway between 30 and 31, then exactly half, or fifty, of the "children" are 31 or older, and half are 30 or younger. So 26+x+4 = 50, and we can find x. So Statement 1 is sufficient. Statement 2 is clearly sufficient, since then we have every number in the righthand column besides x, and we know those numbers sum to 100, so the answer is D.
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HarryStamper
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If the number of members in the club C is 100, what is the value of x? [#permalink] New post   30 Oct 2020, 03:00
chetan2u wrote:
sunny91 wrote:
The table below represents the relationship between ages and the number of members in a certain club C



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

Show 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

D


Hi chetan2u, can we assume that this club has only children as its members? Should we make such assumptions on DS questions?
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Re: If the number of members in the club C is 100, what is the value of x? [#permalink] New post   04 Aug 2022, 17:41
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Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: If the number of members in the club C is 100, what is the value of x? [#permalink]
04 Aug 2022, 17:41
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