A. 1000 watts is 1 kilowatt
Half of a kilowatt is 500 watts, or 0.5 of a kilowatt. 0.5 * 5 = 2.5
Or 500 watts * 5 hours (amount of time passing) = 2500
2500/1000 (or one kilowatt) = 2.5
2.5 kwh is the correct option
In summary, 1 kilowatt is 1000 watts
500 watts is half of a kilowatt
Every hour the appliance uses 500 watts or 0.5 (half) of a kilowatt
