Let no. of adult ticket sold = a
Let no. of child tickets sold = c
So, we are being asked if 12a + 8c > 20000, or in other words, is 3a + 2c > 5000
(1)
a + c = 2000
This doesn't say anything about the numbers sold. If we assume equal number of tickets for each were sold (i.e. 1000 each), then the 3a + 2c = 5000, whereas if number of adult tickets is greater than number of adult tickets (lets say a = 1500, c =500), then 3a + 2c = 5500
Not sufficient
(2)
a > c
Again, on its own it doesnt say much
Combine (1) + (2), and then we can say that the number of adult tickets was atleast 1001, and if we use that value, we can conclusively say that 3a + 2c > 5000
Hence, (D)
OA pls?
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Source: Beat The GMAT — Data Sufficiency |
