and R3
Calculate the electricity bill amount for a month of 30 days, if the following devices are used as
specified
(a) 4 bulbs of 60 W for 6 hours (0)3 tube lights of 40 W for 8 hours
(©) A refrigerator of 300 W for 24 hours (d) An electric mixer of 750 W for 1 hour
(e) A TV of 100 W for 6 hours
The cost per unit of electricity consumedis Rs. 2.50 for first 50 units and Rs.3.00 for every unit
consumed in excess of 50.
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