Question

A house has 3 tubelights, 2 fans and a television. Each tubelight draws
40 W. The fan draws 80 W and the television draws 60 W. On an average, all
the tubelights are kept on for five hours, two fans for 12 hours each and the
television for five hours a day. Find the cost of electric energy used in 30 days
at the rate of Rs. 3.00 per KWH.​

Answer 1

Answer:270

Explanation:

Answer 2

Answer:

40 watts x 3 = 120 watts of tube light

80watts x 2 = 160 watts of fan

TV. = 60 watt

120 x 5 hours = 600 watt

160 x 12 hours = 2080 watt

60 x 5. = 300 watt

add this 3 multiply x 3 and divide by 3/1000 you will get your ans