# Electrical Energy and Power (Wrong because of decimal place)

1. Mar 2, 2007

### AznBoi

1. The problem statement, all variables and given/known data
How much does it cost to watch a complete 21-hour-long World Series on a 180-W television set? Assume that electricity costs $0.070/kWh 3. The attempt at a solution $$\frac {0.070}{kWh} = \frac {x}{(180*10^{3}kW)(21h)}$$ $$\frac {0.070*(180*10^3 kW)(21h)}{kWh} = x$$ I got$264,600 when the answer is suppose to be 26 cents. What am I doing wrong here? Thanks.

2. Mar 2, 2007

### robb_

Why do you have 180*$$10^3$$kW?

3. Mar 2, 2007

### Kaoi

Yes, you've converted your power the wrong way.