The original price of a car was $18,000. Because the car owner thought he could get more money for the car, he set a new price by increasing the original price of the car by 10%. After a week, the car had not sold, so the owner discounted the new price by 10%, and the car was finally sold. What price was the car sold for?  Choose the correct choice from the following.
A) $17,740 B) $17,760 C) $17,780 D) $17,800 E) $17,820
The car was sold for (0.9)(1.1)($18,000)=$17,820.   The answer is $17,820.
<result>E</result>
The original price of a car was $18,000. Because the car owner thought he could get more money for the car, he set a new price by increasing the original price of the car by 10%. After a week, the car had not sold, so the owner discounted the new price by 10%, and the car was finally sold. What price was the car sold for?