If the cost of 1kWh electricity is 80 cents, what is the total cost of operating the following electrical appliances for 3 hours.

Television 135 W
Air conditioner 2.75kW
Lamps 100W

Question

If the cost of 1kWh electricity is 80 cents, what is the total cost of operating the following electrical appliances for 3 hours.

Television 135 W
Air conditioner 2.75kW
Lamps 100W

anonymous · Answer

all are operating at the same time?

kropot72 · Answer

Convert the power consumption of the television and the lamps to kW, then add the power consumption of the appliances.
0.135 + 2.75 + 0.1 = 2.985kW
The cost in dollars of operating all the appliances for 3 hours is:
2.985 * 3 * 0.8 = $?