Problem K. 457. (March 2015)
K. 457. (According to a Hungarian poem for children (http://www.mdche.uszeged.hu/\(\displaystyle \sim\)kovacs/sheepshrine_f.html) it is a rule in the school for young sheep that students get an award for every day they do not attend the classes. On Monday, 10% of the students were absent. On Tuesday, 10% of those absent on Monday returned, but 10% of those present on Monday stayed at home. What percentage of the students will not get a reward for Tuesday?
(6 pont)
Deadline expired on 10 April 2015.
Statistics:
97 students sent a solution.  
6 points:  63 students. 
5 points:  15 students. 
4 points:  6 students. 
3 points:  4 students. 
2 points:  2 students. 
1 point:  1 student. 
0 point:  1 student. 
Unfair, not evaluated:  5 solutions. 
