# In a certain city, electricity costs \$0.18 per kW·h.

Aug 27th, 2014
Anonymous
Category:
Mathematics
Price: \$10 USD

Question description

In a certain city, electricity costs \$0.18 per kW·h. What is the annual cost for electricity to power a lamp-post for 7.50 hours per day with (a) a 100.-watt incandescent light bulb (b) an energy efficient 25-watt fluorescent bulb that produces the same amount of light? Assume 1 year = 365 days.

(a)100 watt bulb        (b)25 watt bulb

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