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# At a certain annual dance tournament, was the number of competitors

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Senior Manager
Joined: 25 Sep 2018
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Location: United States (CA)
Concentration: Finance, Strategy
GMAT 1: 640 Q47 V30
GPA: 3.97
WE: Investment Banking (Investment Banking)
At a certain annual dance tournament, was the number of competitors  [#permalink]

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30 Oct 2018, 08:48
1
00:00

Difficulty:

35% (medium)

Question Stats:

62% (01:10) correct 38% (01:22) wrong based on 38 sessions

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At a certain annual dance tournament, was the number of competitors in rounds 1 to 3 greater than the number of competitors in rounds 3 to 5?
1) The average number of competitors in rounds 4 and 5 was twice the number of competitors in rounds 1 and 2.
2) There were 20 contestants in rounds 1 and 2.

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Joined: 19 Aug 2018
Posts: 31
Re: At a certain annual dance tournament, was the number of competitors  [#permalink]

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30 Oct 2018, 08:59
Why statement 1 is sufficient?, we don't know about round 2 to 3.
Intern
Joined: 04 Apr 2017
Posts: 4
GMAT 1: 640 Q47 V31
Re: At a certain annual dance tournament, was the number of competitors  [#permalink]

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30 Oct 2018, 12:44
jorgetomas9 wrote:
Why statement 1 is sufficient?, we don't know about round 2 to 3.

we know about round 2. round 3 doesn't matter since it is in both.
hope it's clear
Senior Manager
Joined: 09 Aug 2017
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Re: At a certain annual dance tournament, was the number of competitors  [#permalink]

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30 Oct 2018, 19:51
Question stem condensed in below form.
Is no. of candidate in round (1-3)< no. of candidate in round (3-5)
Now first note that 3rd round candidates are common so they doesn't matter in counting

Ok. Proceed now.

Statement 1:
Avg 1-2< avg 4-5
means total of 1-2 < total of 4-5
sufficient.

Statement 2:
20 contestants in round 1-2
not sufficient.

Intern
Joined: 19 Aug 2018
Posts: 31
Re: At a certain annual dance tournament, was the number of competitors  [#permalink]

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31 Oct 2018, 08:36
filippooo wrote:
jorgetomas9 wrote:
Why statement 1 is sufficient?, we don't know about round 2 to 3.

we know about round 2. round 3 doesn't matter since it is in both.
hope it's clear

Yes, you are right I haven't taken into an account that 3 was in both.

Thank you.
Re: At a certain annual dance tournament, was the number of competitors   [#permalink] 31 Oct 2018, 08:36
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