Answer: Banquet Brothers has better deal.
Explanation:
Given: Banquet Brothers sell a tray with 48 servings of pasta for $60.
Cost per serving =

Cookin' Catering sells a tray with 30 servings of pasta for $72.
Cost per serving =

Since, Cost per serving in Banquet Brothers < Cost per serving in Cookin' Catering
So, Banquet Brothers has better deal.