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10 US gal of a solution is made using 5 gal of boiling water, added to 5 gal of a solution (which is 99% water).

These 10 gal are then placed in an empty locker freezer, which is approx 10 cubic ft, and has an ambient temp of -10 degrees(F).

My question is: how long should it take to cool the solution to 35 degrees(F)?

I have not been able to figure out cold output of the freezer, so answer would have to use a variable to define the strength of the freezer's output in the formula for "t".

Thanks in advance.