Answer: $ 148.5
Explanation: cost of operating can be computed as follows :-
= total cost = (total hours of operating) * (kilowatt per hour)* (cost per kw hour)
= total cost = (per day hour* total days) * (kilowatt per hour)* (cost per kw hour)
[tex]=\:total cost=\:\left ( 3hr\times 30days \right )*\left ( 15KW \right )*\left\:\left \left ( 0.110\:perkwh\right )[/tex]
=$148.5
