James says that 12 is a common factor of 3 and 4. June says 12 is a common multiple of 3 and 4. Who is correct

June is correct

Step-by-step explanation:

June is correct because a factor is a number you multiply to get another number but a multiple is a number you get when you multiply two numbers.  

question: how many people can she serve?

answer: she can serve 16.66666667 people. so she can only give 16 people a complete serving.

question: does she have enough ice cream for her guests?

answer: no. explanation: she only has enough for 16 people to have a full serving. however, she can give a 17th person a partial serving.