This puzzle has me STUMPED. The video and recent posts have gotten me only so far with this one.

I've come up with the following relationships in time:

375° +5m = 325°

MC +5m = 350°

375° +Xm = 4p

6p +5m = 400°

Where: p: people, MC: Mac and Cheese, m: minutes, X: Unknown amount

Of all of these, I only know that the Bean Casserole is 375°, but substituting those in give me no help.

What is the next logical step?

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