You need to determine what is happening in the situation maybe? If the number is increasing then it would be + or x and if they were decreasing it would be / or -
Answer: 32 people will ride on each bus.
Step-by-step explanation: First, you need to add the total amount of people going on the bus. You add the number of students and adults. 267 kids + 21 adults = 288 total people. Now, you divide 288 by 9 and get 32. That means 32 people will ride on each bus.