If electricity costs 773ckWh kilowatthour how much would it

If electricity costs 7.73c/kWh (kilowatt-hour), how much would it cost you to run a 120 W stereo system 4.0 hours per day for 4.0 weeks? A) $2.91 B) $0.15 C) $1.04 D) $1.77

Time of stereo system was running in four weeks is

T=4*7*4=112 Hours

Energy Consumed in KWh

E=Pt/1000 =120*112/1000 =13.44 KWh

Cost of energy

C=7.73*13.44 =104 cents =$1.04

If electricity costs 7.73c/kWh (kilowatt-hour), how much would it cost you to run a 120 W stereo system 4.0 hours per day for 4.0 weeks? A) $2.91 B) $0.15 C) $

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