Answers

2016-04-14T15:47:03+05:30
Electricity board charges their consumer for each unit.
1 unit = 1 kW hour

the energy used by the refridgerator = 300*24*31
=22320 W hour
=22.32 kW hour
=22.32 units

if the rate of charge is r then the cost will be 22.32*r
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