Question

calculate the electricity bill amount for a month of 31 days if the following devices are used as specified, Given rate of electricity is rupees 2.50 per unit. a) 3 bulbs of 40 watts for 6 hours b) 4 tube lightsof 50 watts for 8 hours *(please mention each step how multiplied and so on )

Answer 1

120 W/6 H+200 W/8 H=20 W/H+25 W/H=45 W/H=45/1000 KWh=45*RS 2.5=RS 112.5/
DAY
FOR 31 DAYS
RS 31*112.5=RS 3487.5