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An appliance store sells two sizes of air conditioners, an [#permalink]

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23 Feb 2005, 11:07

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C

D

E

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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

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