Answer:
I think the question is asking about LCM (least common multiple). So the answer should be "You will receive a free beverage and a free appetizer on the (36 ) and (72) visits, and you will first receive a free beverage and a free appetizer on the (36) visit."
Step by step explanation:
9 times 4 = 36
12 times 3 = 36
9 times 8 equals 72
12 times 6 equals 72.
Basically as long as the numbers have the same multiple and is under 100.