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# In a conference, if each of the 1230 participants ordered for either

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Math Expert
Joined: 02 Sep 2009
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In a conference, if each of the 1230 participants ordered for either  [#permalink]

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25 Oct 2018, 02:09
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Difficulty:

45% (medium)

Question Stats:

60% (01:27) correct 40% (01:48) wrong based on 124 sessions

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In a conference, if each of the 1230 participants ordered for either Tea or Coffee (but not both), what percent of the female participants ordered for Coffee?

(1) 70 percent of the female participants ordered for Tea.
(2) 80 percent of the male participants ordered for Coffee.

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Re: In a conference, if each of the 1230 participants ordered for either  [#permalink]

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25 Oct 2018, 04:10
1

This is a straightforward Logical question:
We are told everybody ordered either coffee or tea, but not both. meaning - every female who didn't order tea, ordered coffee. Thus, 1) is sufficient - if 70% of females ordered tea, 30% ordered coffee. sufficient!
2) is totally irrelevant - the makeup of what males drunk tells us nothing about the females.
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Re: In a conference, if each of the 1230 participants ordered for either  [#permalink]

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25 Oct 2018, 07:04
1
If 70% of the females had tea, the remaining 30% of them must have had coffee as people picked either of the two beverages - statement I is sufficient A.
Since we don't know the exact number of people of the 1230 people who ordered coffee, B is of no use and can't help us calculate the number/percentage of females who had coffee.

Will wait for the OA.
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In a conference, if each of the 1230 participants ordered for either  [#permalink]

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26 Oct 2018, 01:19
1
Bunuel wrote:
In a conference, if each of the 1230 participants ordered for either Tea or Coffee (but not both), what percent of the female participants ordered for Coffee?

(1) 70 percent of the female participants ordered for Tea.
(2) 80 percent of the male participants ordered for Coffee.

Time needed: 1m 30s

We need to know the % of W participants who ordered coffee. We know that:
a)every participant ordered for one of those drinks, but not both.

Process of elimination:
1)From that and statement a, we know the percentage of W who ordered coffee. Sufficient. Eliminate C and E.
2)we don't know how many W ordered coffee. Insufficient. Eliminate B, D.

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Re: In a conference, if each of the 1230 participants ordered for either  [#permalink]

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06 Jun 2019, 03:31
Statement 1 answers the question right away, 2 is not providing helpful info
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Re: In a conference, if each of the 1230 participants ordered for either  [#permalink]

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31 Jul 2019, 07:11
dumbodingo wrote:
If 70% of the females had tea, the remaining 30% of them must have had coffee as people picked either of the two beverages - statement I is sufficient A.
Since we don't know the exact number of people of the 1230 people who ordered coffee, B is of no use and can't help us calculate the number/percentage of females who had coffee.

Will wait for the OA.

I also have the same doubt. Can anyone please explain?
Re: In a conference, if each of the 1230 participants ordered for either   [#permalink] 31 Jul 2019, 07:11
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