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New post 29 Jul 2006, 15:52
00:00
A
B
C
D
E

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New post 29 Jul 2006, 19:59
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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New post 29 Jul 2006, 22:28
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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SAID BUSINESS SCHOOL, OXFORD - MBA CLASS OF 2008

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New post 30 Jul 2006, 08:31
Good job.. yes the answer is OA is A
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New post 31 Jul 2006, 23:32
A

1) ratio of child to adult = 3:2

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

2) Not Suff.
  [#permalink] 31 Jul 2006, 23:32
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