mathematically
lets say 1= Bijli hay
0=Bijli nahi hay
so aik ghanta hay aik ghanta nahi hay in mathematical form
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
----
Total Bijli hay = 12
Total Bijli Nahi hay = 12
% available = 50
Hence you are better then one guy above (#127) who mentioned that he has just little over 16%.. Do a lot of Shukar brother.