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# Of the 25 cars sold at a certain dealership yesterday, some

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Director
Joined: 17 Sep 2005
Posts: 930
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Of the 25 cars sold at a certain dealership yesterday, some [#permalink]  09 Sep 2007, 15:25
00:00

Difficulty:

(N/A)

Question Stats:

100% (01:01) correct 0% (00:00) wrong based on 2 sessions
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.

- Brajesh
Senior Manager
Joined: 27 Aug 2007
Posts: 253
Followers: 1

Kudos [?]: 10 [0], given: 0

[#permalink]  09 Sep 2007, 22:22
23 = AT only + AB&AT

Insufficient

Ans: E
VP
Joined: 28 Mar 2006
Posts: 1384
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[#permalink]  10 Sep 2007, 03:10
This is always my weak area in Math

Correct me if my approach is wrong guys

25 = n(AT) + n(AB) -n(AT and AB) + None

Given in A is n(AT) = n(AB)

So InSuff

From (B) None = 2

So combining both

23 = 2*n(AT) -n(AT and AB)

Hence Insuff

E
Manager
Status: Post MBA, working in the area of Development Finance
Joined: 09 Oct 2006
Posts: 170
Location: Africa
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Kudos [?]: 3 [0], given: 1

Re: DS - AT & AB [#permalink]  10 Sep 2007, 04:26
As per st.1
Cars with AT could have (a) AB or (b) no AB - so insuff.
St. 2 says about the (b), but no information can be deduced about (a).
Ans. - E

Regards.
b14kumar wrote:
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.

- Brajesh
Director
Joined: 17 Sep 2005
Posts: 930
Followers: 3

Kudos [?]: 38 [0], given: 0

[#permalink]  10 Sep 2007, 05:09
Thanks guys...

OA is E.

- Brajesh
Manager
Joined: 29 Aug 2007
Posts: 110
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Kudos [?]: 2 [0], given: 0

[#permalink]  10 Sep 2007, 06:51
E

Setting up equations, you really cant solve for any of the values.
[#permalink] 10 Sep 2007, 06:51
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# Of the 25 cars sold at a certain dealership yesterday, some

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