Answer:
It would cost $39 to serve 24 people
Explanation:
If the recipe makes enough stew for 6 people, and the ingredients cost $9.75, then for 24 people it will cost $x. You can write this statement as
6 people - $9.75,
24 people - $x.
Or as proportion,
6/24=9.75/x
Find x:
6·× =9.75·24,
x=9.75·24/6=9.75·4=39
Answer: It would cost $39 to serve 24 people