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E
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Difficulty:
15%
(low)
Question Stats:
79% (01:35) correct
21%
(01:32)
wrong
based on 1721
sessions
History
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Of the 25 cars sold at a certain dealership yesterday, some had automatic transmission and some had antilock brakes. How many of the cars had automatic transmission but not antilock brakes?
(1) All of the cars that had antilock brakes also had automatic transmission.
(2) 2 of the cars had neither automatic transmission, nor antilock brakes.
(1) All of the cars that had antilock brakes also had automatic transmission.
(2) 2 of the cars had neither automatic transmission, nor antilock brakes.
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20 Oct 2014, 02:24
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angelfire213
No. All of the cars that had antilock brakes also had automatic transmission means that 0 cars have antilock brakes but no automatic transmission. Check the matric below:
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07 Sep 2010, 14:22
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aiming4mba
Total = {antilock} + {auto transmission} - {both} + {neither} --> 25 = {antilock} + {auto transmission} - {both} + {neither}.
Question: {auto transmission} - {both} = ?
(1) All of the cars that had antilock brakes also had auto transmission --> {antilock} = {both} --> 25 = {both} + {auto transmission} - {both} + {neither} --> 25 = {auto transmission} + {neither}. Not sufficient to calculate {auto transmission} - {both}
(2) 2 of the cars had neither auto transmission nor antilock brakes --> {neither} = 2. Not sufficient to calculate {auto transmission} - {both}.
(1)+(2) 25 = {auto transmission} + {neither} and {neither} = 2 --> {auto transmission} = 23, but we still don't know the numerical value of {antilock} (or {both}) to calculate {auto transmission} - {both}. Not sufficient.
Answer: E.
