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Director
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An appliance store sells two sizes of air conditioners, an [#permalink]
 23 Feb 2005, 11:07
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An appliance store sells two sizes of air conditioners, an 8,000 BTU air conditioner for $235 and a 14,000 BTU air conditioner for $465. If, during a certain sale, the store sold 3 more of the 8,000 BTU models than 14,000 BTU models and generated revenues of $3,495, how many air conditioners did it sell?
(A) 3
(B) 6
(C) 9
(D) 12
(E) 13
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SVP
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If X is 14000 BTU, then X+3 is for 8000 BTU
465 X + 235(X+3) = 3495
X = 558/140 ~ 4....weird
X + 3 ~ 7.....weird 
Last edited by banerjeea_98 on 23 Feb 2005, 12:48, edited 1 time in total.
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Director
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Everyone has problem??
I guess this one has typo b/c I couldn't find the answer either.
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Manager
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HEY I GET THE ANSWER AS X=978/140 WHICH IS NOT A WHOLE NO.??
SOMETHG WRONG!!!
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Manager
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i got that question on one of the ARCO gmat tests and couldnt figure it out for the life of me. i was solving it the same way as everyone else too. now I feel a lot better about that one. you can try and back solve it and it won't come out either.
Answer C would be 235(6) + 465(3)= 2805
Answer D wont work bc you cant get a difference of 3 b/w the 2
9+3=12 (difference is 6)
8+4=12 (difference is 4)
7+5=12 (difference is 2)
Answer E would be 235(8)+465(5)=4205
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Director
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This problem is from Peterson Master the GMAT 2005 software. So far I faced 2 problems with wrong answer choices or typo already. This is one of them.
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Manager
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thats the cd I mean its blue and yellow. doesnt it say ARCO Master the GMAT CAT on it? If so how well have you done on the CAT's on that CD?
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Manager
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Well 235x + 465(x-3) = 3495
x = no. of 8000 BTU m/c sold
=>700x =4890
=> x ~ 7
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SVP
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Re: PS - appliance store [#permalink]
25 Feb 2005, 16:17
Answer is (C), question needs to be changed to "the store sold 3 less of the 8,000 BTU models than 14,000 BTU models". 
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Re: PS - appliance store
[#permalink]
25 Feb 2005, 16:17
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