calculate the total cost of running the following electrical devices in the month of september, if the rate of 1 unit of electricity is ₹ 6.00. (1) electric heater of 1000W FOR 5 hours daily. (2) electric refrigerator of 400 W for 10 hours daily
Answers
The total cost of running these equipment in september will be Rs 1620
Explanation:
One unit is equal to 1 kilowatt hour
1) capacity of electric heater = 1000w = 1 kilowatt
Time used = 5 hours
total kilowatt hour = 1 x 5 = 5Kwh = 5 units
cost of 1 unit = 6 rs
=> cost of 5 units = 6 x 5 = 30 Rs/ day
2) capacity of electric refrigerator = 400 w = 0.4 kilowatt
Time used = 10 hours
total kilowatt hour = 0.4 x 10 = 4 Kwh = 4 units
cost of 1 unit = 6 rs
=> cost of 4 units = 6 x 4 = 24 Rs/day
Hence total cost per day = 30 + 24 = 54 Rs/day
Total cost in September = 30 days x 54 Rs/day = 1620 Rs
Hence the total cost of running these equipment in september will be Rs 1620
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