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Of the people waiting on the line before the cash register

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Of the people waiting on the line before the cash register  [#permalink]

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New post 09 Mar 2019, 13:02
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Difficulty:

  45% (medium)

Question Stats:

65% (01:17) correct 35% (01:26) wrong based on 34 sessions

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Of the people waiting on the line before the cash register in a certain supermarket, 10% waited at least five minutes and 5% waited at least 10 minutes. How many people waited at least 5 minutes and less than 10 minutes?

(1) There are a total of 60 people on the line.

(2) 3 people on the line waited at least 10 minutes.
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Re: Of the people waiting on the line before the cash register  [#permalink]

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New post 19 Mar 2019, 12:24
rohan2345 wrote:
Of the people waiting on the line before the cash register in a certain supermarket, 10% waited at least five minutes and 5% waited at least 10 minutes. How many people waited at least 5 minutes and less than 10 minutes?

(1) There are a total of 60 people on the line.

(2) 3 people on the line waited at least 10 minutes.


#1
total = 60
10% waited at least five minutes = 6 and 5% waited at least 10 minutes= 3
at least 5 minutes and less than 10 minutes = 6-3 = 3

#2
3 people on the line waited at least 10 minutes
sufficient
IMO D
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Re: Of the people waiting on the line before the cash register   [#permalink] 19 Mar 2019, 12:24
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