Problem P. 3834. (November 2005)
P. 3834. Electric toothbrushes are becoming more and more popular. Calculate the cost of operating one during a year if it dissipates a power of 2 W, and each day you spend 4 minutes cleaning your teeth. The price of 1 kWh electric energy is 34 forints.
(3 pont)
Deadline expired on 12 December 2005.
Statistics:
>345 students sent a solution.  
3 points:  302 students. 
2 points:  13 students. 
1 point:  21 students. 
0 point:  1 student. 
Unfair, not evaluated:  8 solutions. 
