Tim's electricity costs 4.3 ¢ a kilowatt hour or 100 watts. how much will it cost to run the following appliances for 10 hours? (round to the nearest cent) a dryer @ 4,000 watts. cost = a heater @ 1,500 watts. cost = a radio @ 40 watts. cost =

First, let's check the amount of power consumed by each of the appliances for 10 hours. the calculated values are shown below.

dryer = (4000 watts per hour) (10 hours) = 4 watts or 40 kw
heater = (1500 watts per hour)(10 hours) = 15000 watts or 15 kw
radio = (40 watts per hour)(10 hours) = 400 watts or 0.40 kw

now, adding the total consumed by the three appliances for 10 hours, we have

total = 40 + 15 + 0.40 = 55.40 kw

since we now have the  total power consumed, and given that electricity costs 4.30 cents per kwh, we have

cost = 55.40(4.30) = 238.22 cents 

rounding off the cost to the nearest cents, we have a total amount of 238 cents for the total electricity cost.

answer: 238 cents

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