Answered: Kabir bought 5 new light bulbs of 50 W… | bartleby

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Kabir bought 5 new light bulbs of 50 W each in addition to the 7 bulbs he already had in his house which were also 50 W each. Calculate his electricity bill, if he keeps the new bulbs on for 5 hours and the older bulbs on only for 3 hours, and the cost of one unit of electricity is Rs. 60.

a) Rs.136

b) Rs.137

c) Rs.138

d) Rs.139

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