A house has three tube lights, two fans and a Television. Each tube light draws 40W. The fan draws 80W and the Television draws 60W. On the average all the tube lights are kept on for five hours, two fans for 12 hours and the television for five hours every day. Find the cost of electric energy used in 30 days at the of Rs. 3.00 per KWH.

A house has four tube-lights, three fans and a television. Each tube-light draws 40 W. The fan draws 80 w and the television draws 100 W. On an average, all the tube-lights are kept on for 5 hours, all fans for 12 hour and the television for 6 hours everyday. Find the cost of electric energy used in 30 days at the rate of Rs. 3.00 per KWH.

In a house two 60W electric bulbs are lighted for 4 hours, and three 100 W bulbs for 5 hours everyday. Calculate the electric energy consumed in 30 days.

A house has 3 tube-lights of 20 watts each. On the all the tube-light are kept on for five hours. Find the energy consumed in 30 days.

Two 60W bulbs are used for 4hours everyday and five 100W bulbs are used for 5 hours everyday. How many units of electricity will be consumed in 30 days?

An electric refrigerator rated 400 W operates 8 hours/day. What is the cost of the energy to operate if for 30 days at Rs 3.00 per kWh ?

An electric refrigerator rated 400 W operates 8 hour//day . What is the cost of the energy to operate it for 30 days at Rs. 3.00 per kWh ?

An electric refrigerator rated 400 W operates 8 hour/day. What is the cost of the energy to operate it for 30 days at Rs 3.00 per kW h?

An electric geaser rated 600 W operates 9 hour/day. What is the cost of the energy to operate it for 30 days Rs 4.00 per KWh?