Problem P. 4235. (March 2010)
P. 4235. The distance between the cars in a long queue of cars is 15 m and the average length of a car is 5 m. The speed of the car-queue is 72 km/h. How long does it take after an accident to develop a 10 km-long car-queue consisting of standing cars if the distance of the cars is 3 m?
Deadline expired on April 12, 2010.
Sorry, the solution is available only in Hungarian. Google translation
Megoldás. Körülbelül 12,5 perc alatt kialakul a 10 km-es kocsisor.
127 students sent a solution. 4 points: 89 students. 3 points: 7 students. 2 points: 12 students. 1 point: 15 students. 0 point: 1 student. Unfair, not evaluated: 3 solutions.