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.