Advanced Placement (AP)

An Energy Star air conditioner unit costs $300 while a standard unit costs $200. The two units have the same cooling capacity. The Energy Star unit costs 5 cents per hour less to run. If you
buy the Energy Star unit and run it for 12 hours per day for 6 months of the year, how long does it
take to recover the $100 extra cost?

answer
Answers: 3

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An Energy Star air conditioner unit costs $300 while a standard unit costs $200. The two units have...

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