The length of time of the refrigerator

[oliverjames]

A refrigerator with an average COP of 2.8 is used to cool a well-insulated container whose contents are equivalent to 12 Kg of water from 40 degree C to 10 degree C. When running, the refrigerator consumes 400W of electric power. The length of time the refrigerator must run to accomplish this cooling is
can anyone help me to solve this.
thanks
james

 

[tiny-tim]

welcome to pf!

hi james! welcome to pf!

Show us what you've tried, and where you're stuck, and then we'll know how to help!

(same with your other questions, of course)