I bought this Turkey meal deal, ready to eat thing.

I am heating the Turkey now, following the instruction that says 10
mins at 325 per pound. But there is no weight info on the Turkey except
that I am aware that it is for 10 people. Instruction said to check
with thermometer until the thickest part of it reaches 160 but I didn't
pick one up yesterday.

So, I need to figure out how much a Turkey for 10 people weight so that
I can time it? Any idea?

I have never done handling of any big meal before. I am doing it for my
visiting brother.