Answer: 167 days
Explanation:
Energy star unit saves 5 cents per hour.
When run for 12 hours per day it saves:
= 5 * 12
= 60 cents
The extra cost of $100 in cents is:
= 100 * 100
= 10,000 cents
Days it will take for $100 to be recovered:
= 10,000 / 60
= 166.67 days
= 167 days
In 6 months you would have saved:
= 60 cents * 180 days
= 10,800 cents
= $108
It will take a period of 167 days to recover the $100 extra cost.
Energy star unit saves 5 cents per hour and when its run for 12 hours per day, it saves:
= 5 * 12
= 60 cents
The extra cost of $100 in cents is:
= 100 * 100
= 10,000 cents
The number of days it will take for $100 to be recovered:
Days = 10,000 / 60
Days = 166.67 days
Days = 167 days
In 6 months you would have saved::
Saved amount = 60 cents * 180 days
Saved amount = 10,800 cents
Saved amount = $108
In conclusion, It will requires a period of 167 days to recover the $100 extra cost.
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