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An auto dealership sold one car with a 10% profit and one

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Director
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An auto dealership sold one car with a 10% profit and one [#permalink] New post 11 Oct 2007, 18:40
An auto dealership sold one car with a 10% profit and one car with a 10% loss, which gave it an overall profit of 5% from these sales. How much was each of the cars if the dealership profit was $1000?

A \$11000 and \$9000
B \$15000 and \$5000
C \$9,450 and \$10550
D \$11550 and \$8450
E \$10000 and \$10000

The solution to this question does not require knowledge of 5%, but it is still given. Is useless info often presented in real Gmat to confuse test taker.

Last edited by IrinaOK on 11 Oct 2007, 19:26, edited 1 time in total.
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Re: do real Gmat questions often have redundant/useless info [#permalink] New post 11 Oct 2007, 18:43
IrinaOK wrote:
An auto dealership sold one car with a 10% profit and one car with a 10% loss, which gave it an overall profit of 5% from these sales. How much was each of the cars if the dealership profit was $1000?

A \$11000 and \$9000
B \$15000 and \$5000
C \$9,450 and \$10550
D \$11550 and \$8450
E \$10000 and \$10000


heh.. wondering the same thing! :)
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Re: do real Gmat questions often have redundant/useless info [#permalink] New post 11 Oct 2007, 19:45
IrinaOK wrote:
An auto dealership sold one car with a 10% profit and one car with a 10% loss, which gave it an overall profit of 5% from these sales. How much was each of the cars if the dealership profit was $1000?

A \$11000 and \$9000
B \$15000 and \$5000
C \$9,450 and \$10550
D \$11550 and \$8450
E \$10000 and \$10000

The solution to this question does not require knowledge of 5%, but it is still given. Is useless info often presented in real Gmat to confuse test taker.


I think the 5% is still useful since it allows you to determine the total cost of both cars. But given these answer choices, we know this is unnecessary.

If 5% profit = 1000, then the total revenue from both cars should be $20,000

Otherwise, you could have chosen an answer such as $25000 and $15000
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Re: do real Gmat questions often have redundant/useless info [#permalink] New post 11 Oct 2007, 19:54
JingChan wrote:
IrinaOK wrote:
An auto dealership sold one car with a 10% profit and one car with a 10% loss, which gave it an overall profit of 5% from these sales. How much was each of the cars if the dealership profit was $1000?

A \$11000 and \$9000
B \$15000 and \$5000
C \$9,450 and \$10550
D \$11550 and \$8450
E \$10000 and \$10000

The solution to this question does not require knowledge of 5%, but it is still given. Is useless info often presented in real Gmat to confuse test taker.


I think the 5% is still useful since it allows you to determine the total cost of both cars. But given these answer choices, we know this is unnecessary.

If 5% profit = 1000, then the total revenue from both cars should be $20,000

Otherwise, you could have chosen an answer such as $25000 and $15000


Thanks! That is a good point, given other AC could be trapped.
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 [#permalink] New post 11 Oct 2007, 21:47
Profit = 1000 = 5%

Total sales = $20000

We know 1.1x + 0.9x = 20000 -> x = 10,000
So selling price = 11000 and 9000

Ans A
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Re: do real Gmat questions often have redundant/useless info [#permalink] New post 11 Oct 2007, 21:59
IrinaOK wrote:
An auto dealership sold one car with a 10% profit and one car with a 10% loss, which gave it an overall profit of 5% from these sales. How much was each of the cars if the dealership profit was $1000?

A \$11000 and \$9000
B \$15000 and \$5000
C \$9,450 and \$10550
D \$11550 and \$8450
E \$10000 and \$10000

The solution to this question does not require knowledge of 5%, but it is still given. Is useless info often presented in real Gmat to confuse test taker.


Had this one from challenges yesterday.

.05s=1000. So we know the total price of both cars: s = 20000.

lets say X = price of normal car. So we have 1.1x and .9x

Now we know that 1.1x + .9x = s 2x=s 2x=20,000

x=10000.

So just replug in for x. We get 11,000 and 9000.

A.
Re: do real Gmat questions often have redundant/useless info   [#permalink] 11 Oct 2007, 21:59
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