Calculate the electricity bill amount for a month of 31 days , if the following devices are used as specified.
a) 3 bulbs of 40W for 6 hours
b) 5 tubelights of 40W for 6 hours
c) a refrigerator of 400W for 24 hours
given the rate of electricity is rs 2.50 per unit
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Answer:
Bulb = (40/1000) X 2 X 6 = 0.48 units
Tube lights = (50/1000) X 2 X 8 = 0.8 units
TV = (120/1000) X 6 = 0.72 units
Total power consumed = 0.48 + 0.8 + 0.72 = 2 units
electricity cost = 2.50 X 2 X 30 =Rps.150
Explanation:
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