Problem K. 499. (March 2016)
K. 499. Cats are chasing mice. Five mice hide in a crack of the wall. Then there are twice as many cats as running mice. Now ten cats get bored of the race and stop. Then there are three times as many mice running as cats chasing them. How many mice and how many cats started the chasing game?
Deadline expired on April 11, 2016.
130 students sent a solution. 6 points: 110 students. 5 points: 7 students. 4 points: 4 students. 3 points: 5 students. 1 point: 1 student. 0 point: 3 students.