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

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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)
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At a certain annual dance tournament, was the number of competitors  [#permalink]

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New post 30 Oct 2018, 07:48
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  25% (medium)

Question Stats:

72% (01:01) correct 28% (01:12) wrong based on 29 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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Re: At a certain annual dance tournament, was the number of competitors  [#permalink]

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New post 30 Oct 2018, 07:59
Why statement 1 is sufficient?, we don't know about round 2 to 3.
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Re: At a certain annual dance tournament, was the number of competitors  [#permalink]

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New post 30 Oct 2018, 11:44
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
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Re: At a certain annual dance tournament, was the number of competitors  [#permalink]

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New post 30 Oct 2018, 18:51
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.

A is answer.
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Re: At a certain annual dance tournament, was the number of competitors  [#permalink]

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New post 31 Oct 2018, 07:36
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.
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Re: At a certain annual dance tournament, was the number of competitors &nbs [#permalink] 31 Oct 2018, 07:36
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At a certain annual dance tournament, was the number of competitors

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