One day a car rental agency rented 3/4 of its cars, including 3/5 of its cars with CD players. If 3/5 of its cars have CD players, what percent of the cars that were not rented had CD players?  Answers
A) 29/30 B) 24/25 C) 19/20 D) 14/15 E) 9/10
The cars with CD players which were not rented is (2/5)(3/5) = 6/25 of all the cars.   The cars which were not rented is 1/4 of all the cars.   The percent of non-rented cars which had CD players is (6/25) / (1/4) = 24/25   The answer is 24/25.
<result>B</result>
One day a car rental agency rented 3/4 of its cars, including 3/5 of its cars with CD players. If 3/5 of its cars have CD players, what percent of the cars that were not rented had CD players?