There is a very long line that has been forming all night to : PS Archive
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# There is a very long line that has been forming all night to

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Manager
Joined: 10 Jun 2003
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There is a very long line that has been forming all night to [#permalink]

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29 Aug 2003, 11:19
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There is a very long line that has been forming all night to buy tickets for a concert. At 7:00 am no more people were allowed to join the line. At 8:00 am two ticket windows opened serving the customers in the line. At 5:00 pm, the last person was done buying his tickets. Assuming the rate that each window helped every customer was the same, how much shorter, in hours, would this process have taken had there been one more window open all day?

(A) 2.5
(B) 3.0
(C) 3.5
(D) 3.66667
(E) 3.75
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Sept 3rd

Last edited by mciatto on 29 Aug 2003, 11:31, edited 1 time in total.
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29 Aug 2003, 11:30
It would have taken 6 hours instead of 9, so 3 hours less
Manager
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29 Aug 2003, 12:00
Correct, now let's say that 7 more windows opened. How much shorter than the original scenario of only two windows being open. (next person show your work please)

(A) 4
(B) 5
(C) 5.5
(D) 6.5
(E) 7
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Sept 3rd

Manager
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29 Aug 2003, 13:40
2 lines*t persons/line*9hours=9 lines*t persons/line*H hours
H=2
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03 Sep 2003, 12:07
Can you explain the first question
03 Sep 2003, 12:07
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