Operating cost for lights and coffee machines

[Meeeessttteeehh]

Had a bit of a hard time with this one. Anyone mind giving it a look over?

1. Homework Statement
Find the total cost for a business that operates the following for one year. Assume that the rate is 6.4₵/kWh.
· Fifteen 100 W light bulbs for an average of eight hours a day.
· Two 15 W coffee makers connected to a 120 V power supply for two hours a day each

Homework Equations

cost = E x rate
E = pt

The Attempt at a Solution

 

[NFuller]

Looks alright to me.

 

[ehild]

The total cost was asked.

Find the total cost for a business that operates the following for one year.

 

[Meeeessttteeehh]

The total cost was asked.

Ohhhh, so the cost of the lights plus the cost of the coffee. Got it! Everything else seem right?

 

[ehild]

Ohhhh, so the cost of the lights plus the cost of the coffee. Got it! Everything else seem right?

No, I just noticed, that it was 15 W coffee makers instead of 15 ohm.

 

[Meeeessttteeehh]

No, I just noticed, that it was 15 W coffee makers instead of 15 ohm.

Oh jeez. Can you tell I'm tired? I just double checked the assignment, it is in fact Ohm's and the watts in the question was an error in my typing. Thanks for catching that!

 

[ehild]

Yes, 15W for a coffee maker looked too little.