Answer:
27 guests
Explanation:
$10 per guest for food and $5 per guest for drink.
Additional $145
Total: $550
Equation: Let x represent the amt of guests.
10x+5x+145=550
15x+145=550
15x=405
x=27
Therefore, Gail can feed 27 guests.
I hope this helped and have a good rest of your day!