Task: Question Answering
Input (English): Problem: a car runs at the speed of 25 km per hour when not serviced and runs at 75 kmph when serviced. after servicing the car covers a certain distance in 5 hours. how much time will the car take to cover the same distance when not serviced ?
Options: a. 8 hours, b. 16 hours, c. 15 hours, d. 7 hours, e. none
Output (English): d