Question

Two 60W bulbs are used for 4 hours every day and five 100W bulbs are used for 5 hours every day how many units of electricity will be consumed in 30 days?
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Answer 1

Answer:

The total units consumed in 30 days=(2×60×4×30+5×100×5×30)/1000 Units

= 89.4 units , KWh = units.

Explanation:

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Answer 2

Explanation:

1. If two 60w bulbs are used 4 hours in a day then in 30 days, then they are used 120 hours.

Therefore, 'units' consumed in 30 days by 2 bulbs of 60w is

Units = 2× Power × Time

= 2× 60 × 120

= 14400 'units'

2. If 5 bulbs of 100w are used 5 hours per day then in 30 days, then they are used 150 hours.

Therefore, 'units' consumed in 30 days by 5 bulbs of 100w is

Units = 5× Power × Time

= 5× 100× 150

= 75000'units'

Therefore, 'units' consumed by two 60w bulbs and 5 bulbs of 100w in 30 days is 75000+14400=89400units or 89400kwh(kWh=units)

1 kWh = unit = 3.6×10^6 joule

89400units= 321840×10^6 joule

I Hope, this helped you a lot