Problem P. 4053. (March 2008)
P. 4053. A train goes through a 1100 m long tunnel with a speed of 72 km/h, in one minute. What is the length of the train?
(3 pont)
Deadline expired on 11 April 2008.
Statistics:
>201 students sent a solution.  
3 points:  187 students. 
2 points:  9 students. 
Unfair, not evaluated:  5 solutions. 
