calculate the electricity bill amount of for a month of 31 days is the following devices are used as specified a three bulbs of 40 watt for 6 hours B for tubes tube lights of 50 word for 8 hours c a t v of 12 watt for 6 hours given the rate of electricity is rupees 2.50 per unit
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Answer:₹55.18
There are three bulb let b1 b2,and b3.
For b1 buld the wattage is 40w for 6 h so,
Energy=power ×time
Energy=40/1000×6
By calculating we get
=0.24kwh...........(1)eq
For b2 bulb: P=50w for 8h
Energy=power ×time
=50/1000×8
=0.4kwh....(2)eq
For b3 bulb : P=12 for 6h
Energy=power ×time
=12/1000×6
=0.072kwh......(3)eq.
By adding equation:
Total energy=0.712 for 31 days
So,. Energy=0.712×31=22.072
Energy=22.072kwh or unit
Rate=2.5₹/unit
Total cost=22.072×2.5
=55.18₹
Final answer .......
Hope it is helpful...byee
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