Question

Which of the following is the most appropriate unit to describe the rate at which people are entering a theme park?. . A.Hours per person, because the dependent quantity is the hours. . B.Hours per person, because the dependent quantity is the people. . C.People per hour, because the dependent quantity is the hours. . D.People per hour, because the dependent quantity is the people. .

Answer 1

Counting hours per person just wouldn't make sense. So you can immediately cross out choices A and B. Now the only choices to choose from is C or D, and now, we only have to decide if the dependent quantity is either the hours or the number of people. The answer here would be D, since time cannot be a dependent quantity. No matter how many people pass by, time will always go on. Therefore, the dependent quantity is the amount of people.