A man covered a certain distance at some speed. If he had moved 3 kmph faster, he would have taken 40 minutes less. If he had moved 2 kmph slower, he would have taken 40 minutes more. What is the the distance in km?
Q1. A man covered a certain distance at some speed. If he had moved 3 kmph faster, he would have taken 40 minutes less. If he had moved 2 kmph slower, he would have taken 40 minutes more. What is the the distance in km?
Answer: 40
Explanation: Setting up two equations from the speed-change conditions gives v = 12 km/hr and t = 10/3 hr. Distance = 12 × 10/3 = 40 km.