Oh wait a minute i have to write this down
There is no such thing as a "kilowatt per hour". If that's actually what the question says, then it's a defective question, and you should put it away before it makes you any more confused.
A 120 watt light bulb uses exactly 0.12 kilowatt when it's turned on.
In one hour, it uses
(0.12 kilowatt) x (1 hour) = 0.12 kilowatt-hour of energy.
If energy costs $0.20 per kilowatt-hour, then the cost is
(0.12) x (0.20) = 2.4 cents. (0.024 dollar)
> and>
Step-by-step explanation:
Answer:
12 sandwiches
Step-by-step explanation:
If 3 sandwiches cost $20
Then x sandwiches cost $80
3----20
x----80
20x=3 x 80
20x=240
x=240/20
x=12 sandwiches