Answer:
No (it would be 48 cups)
Step-by-step explanation:
1 gallon=16 cups. (g will represents gallons and c will represent cups)
so 3g×16c=48c
That means that there is only enough cups for 48 guests.
Solution to sally's problem
She would need one more gallon to have enough cups for all her guests. If she got another gallon she would have 64 cups of lemonade leaving 4 extra cups!
(have a good day!)