in your house everyday 40 watts of 2 electric bulb runs for 2 hours, 60 watt of one bulb runs for 2 hours 250 watt tv for 2 hours, 808 of electric stove for 2 hours, for a unit charge is rupees 3.25 paise, then how much they pay for the month of September
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Solution :
➢Electric bulb
- Power = 40 W
- No of electric bulbs = 2
- Time = 2 hrs
➜ Energy consumed = 40 x 2 x 2 = 160 J
➢Bulb
- Power = 60 W
- Time = 2 hrs
➜ Energy consumed = 60 x 2 =120 J
➢TV
- Power = 250 W
- Time = 2 hrs
➜ Energy consumed = 250 x 2 = 500 J
➢ Electric stove
- Power = 808 W
- Time = 2 hrs
➜ Energy consumed = 808 x 2 = 1616 J
Per day energy consumption
= 160 + 120 + 500 + 1616
= 2396
Monthly energy consumption
= 2396 x 30
= 71,880 J
➜ Rate = 3.25 paisa / unit
Total cost
= 71, 880 x 3.25
= 2,33,610 paisa
We know that ,
➜ 1 rupee = 100 paisa
➜ Hence ,
➜ 2,33,610 paisa = 2,336.10 rupee
They pay ₹ 2,336.10 for the moth of September.
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