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Home / Questions / Low-energy lightbulbs cost $3.50 have a life of nine years, and use about $1 60 of electri...

Low-energy lightbulbs cost $3.50 have a life of nine years, and use about $1 60 of electricity a year. Conventional lightbulbs cost only $.50 but last only about a year and use about $6 60 of energy

Low-energy lightbulbs cost $3.50, have a life of nine years, and use about $1.60 of electricity a year. Conventional lightbulbs cost only $.50, but last only about a year and use about $6.60 of energy. If the real discount rate is 5%, what is the equivalent annual cost of the two products?

Jun 23 2020 View more View Less

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