i have the formulas!! woohoo . . 
watts/1000 = kW
kWh = kw x hours
cost = kWh x 3.92
source: wiki.answers.com/Q/What_...
welcum!! 
np. .
bbyes. .
nix. c;
says
berns pno?
kWh = kW x hours
cost = kWh x 3.92
nix. c;
says
ganun lang ?
nix. c;
says
yun nA YUNG COST?
nix. c;
says
bt ang laki ? dba divide ?
ung ano?
Ica:]
says
