Problem P. 3983. (May 2007)
P. 3983. A racewalker on the training walked between point A and point B. First he walked from A to B taking 120 steps in each minute then he turned back at B and went back to A taking 90 steps in each minute. He turned back at A and went to B again and took 60 steps per minute, and finally he turned back at B and stepped only 45 in one minute until he got back to A. It took him 1 hour and 3 minutes. What is the distance in steps between the points A and B? What is the average steps that the walker took in one minute?
Deadline expired on June 11, 2007.
112 students sent a solution. 3 points: 89 students. 2 points: 9 students. 1 point: 3 students. 0 point: 1 student. Unfair, not evaluated: 10 solutions.