Susan used 9 5/8 kilowatts of electricity to power her house for 5 1/2 hours. on average, how many kilowatts did susan use per hour?

it will cost dollar $540

the living room is 3 which means if we divide 325/3 then we get $108

therefore if 1part of the living room cost $108 and 3 costed $325

then total 5part of the room will cost 5*108 which gives $540