Question

Fifteen bulbs of 60 W each run for 6 hours daily and a refrigerator of 300 W runs for 5 hours daily. Workout per day bill at Rs.3 per kWh.

Answer 1

60*15*6=5400W=5.4kWh
300*5= 1500W=1.5kWh
bill= (5.4+1.5) 3
=6.9*3
20.7rs