One house has 8 bulbs of 40 baht which burns 5 hours in one day and four bulbs of 80 baht which burns 10 hours in a day. If the cost of Vijaylea is Rs 2 rupees / kw / h, then what will the monthly will be?
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₹2400
1st part
8×40×5 =1600watt
2nd
4×80×10=3200watt
total electricity spent =1600+3200=4800w
cost =4800/2=₹2400
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