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calculate the expenses in a house for 30 days if there are 40 tubes of 50W each,3 fans of 100W each and a water pump of 1 horse power.If tubes and fans are on for 10h/day while the water pump is on for 1h/day.If the cot is rs.4 per unit
(40x50 + 100x3)x10 + 750x1 = power consumption in whdivide this with 1000 to get consumption in kwhmultiply the found number with 4 to get the cost
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