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
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