Solve.The Cook County Elementary School District noted that there was an increase of 1780 pupils during the fall semester. How many new teachers must they add to keep the average class size under 25? (Assume one teacher for each class.)

A. at least 71 teachers
B. at most 71 teachers
C. at least 72 teachers
D. at most 72 teachers


Answer: C

Mathematics

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A.

B.

C.

D.

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