Question

At 7.65 cents per kilowatt-hour, what does it cost to operate a 10.0 hp motor for 6.00 hr?


At 7.65 cents per kilowatt-hour, what does it cost to leave a 75.0 W light burning 24.0 hours a day?

Answer 1

cost=rate*time*power

in the first, cnvert hp to kwatts

in the second, convert W to kw.