- #1

ardour

## Homework Statement

## Homework Equations

I'm not sure.

## The Attempt at a Solution

I tried to solve this as you would with electric charges. I added up the temperatures and then divided by 2, to get (C) 17.5 degrees Celsius. The answer key gives the answer as (D) 20.0 degrees Celsius. I'm not sure what equations you would use to get this.