Answer:
Mrs. O’conner will make 16 batches.
Step-by-step explanation:
Given that total 72 people are going to attend the party, and Mrs. O’ conner will prepare 2 batches of banana pudding for every 9 people attending.
72, when divided in a group of 9 people, it will come = 72/9 = 8 groups
For a group, she will make batches
Therefore, 1 group (9 people) = 2 batch
8 groups (9*8=72 people) = 8*2 = 16 batches
Hence, Mrs. O’conner will make 16 batches for 72 people.