Answer:
4 days and 18 hours.
Step-by-step explanation:
1440 Watt hours = 1 day
6840 Watt hours = x
Cross multiply.
1440*x = 6840*1
1440x = 6840
Divide both sides by 1440.
1440x/1440 = 6840/1440
x = 4.75 days
4.75 days is 4 days and 3/4 of a day; because 3/4 = 0.75
We have to find 3/4 of 1 day.
1 day is 24 hours.
3/4* 24
Divide 24 by 4.
3*6 = 18
So, 18 hours.
Therefore a light bulb consumes 6840 Watt hours in 4 days and 18 hours.
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