K. 457. (According to a Hungarian poem for children (http://www.mdche.u-szeged.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?
This problem is for grade 9 students only.
Deadline expired on 10 April 2015.