In the Ridgewood Elementary School, teachers earn an average of $40,000, while librarians earn $32,000 per year. However, the average salary for Ridgewood employees is only $25,000.
If the above information is correct, then which of the following must be true?
A)There are more librarians than there are teachers.
B)At least one Ridgewood employee earns less than $25,000.
C)At least one teacher earns less than the average salary of a Ridgewood librarian.
D)At least one librarian earns more than the average Ridgewood teacher.
E)Only half of Ridgewood employees are librarians or teachers.

Question

Quizplus · Accepted Answer

It must be true that at least one Ridgewood employee earns less than $25,000. If the average salary is less than the average salaries of librarians and teachers, then at least one person must be earning less money in order to lower the average salary.

In the Ridgewood Elementary School, Teachers Earn an Average of $40,000