Fill in the empty columns of a work/power table

[ElegantSir]

Homework Statement

"Fill in the empty columns of the following table"

Table is in the thumbnail

Homework Equations

work = force / distance
power = work / time

Y = E * c
-Y is the yearly running cost
-E is the EnerGuide energy rating per year
-c is the cost of electricity per kW/h

The Attempt at a Solution

I have already filled in the first 2 blank rows on the table.
The E per week is 5.08kWh/week and 17.5kWh/week
for the running yearly cost Y it is $0.30/week and $1.05/week

This is where I am stuck. I have no idea how to fill out the last 2 columns with the information I currently have. I thought I would need to divide and or multiply a number by 168 (number of hours in a week) but that doesn't seem to do any good. Could someone point me in the direction as to what I need to calculate in order to find the estimated hours of use per week?

 

[Daeho Ro]

It just depends on your choice :)

 

[ElegantSir]

It just depends on your choice :)

Does that mean that the time is completely up to you to decide? The only reason I am confused about this is because this is only a practice question and the actual homework has a table almost identical to this one where it asks the "estimated hours of use."
So to reiterate the hours of use I am supposed to be making up..?

 

[Daeho Ro]

Yes, it seems. Sometimes you have to give some condition to solve an problem. Usually, people didn't watch the TV whole 7 days :)

 

[ElegantSir]

Yes, it seems. Sometimes you have to give some condition to solve an problem. Usually, people didn't watch the TV whole 7 days :)

Hmm, it makes sense. But you would think that if I wasnt supposed to solve something that the estimated time would be an automatic given variable on the table.

 

[Daeho Ro]

I read carefully the problem, but I didn't get it.