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GMATPrep - DS [#permalink] New post 29 Jul 2006, 16:52
00:00

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
OA later....
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 [#permalink] New post 29 Jul 2006, 20:59
Avg = (5a + 2c)/(a+c)

Consider 1: c/a = 3/2 therefore 2c = 3a. Terms cancel out when substituted in the above formula .. SUFF
Consider 2: a + c = 80, -- INSUFF

Ans: A
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 [#permalink] New post 29 Jul 2006, 23:28
A

Total revenue = 5a + 2c
Total sold = a+c
Avg = (5a + 2c)/(a+c)

St1: c/a = 3/2 i.e 2c = 3a
Substituting in above equation we get
Avg = (5a+3a)/(a+3a/2) = 16/5: SUFF

St2: a = 80: INSUFF
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 [#permalink] New post 30 Jul 2006, 09:31
Good job.. yes the answer is OA is A
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 [#permalink] New post 01 Aug 2006, 00:32
A

1) ratio of child to adult = 3:2

Hence whatever the number of tickets sold....
Av = 16/5

2) Not Suff.
  [#permalink] 01 Aug 2006, 00:32
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