SOLUTION: A school has a student enrollment of 1200 and an average class size of 30 students per teacher. The average class size is going to be lowered to 24 students per teacher next year.

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Question 195392: A school has a student enrollment of 1200 and an average class size of 30 students per teacher. The average class size is going to be lowered to 24 students per teacher next year. How many additional teachers must be added in order for this to happen provided there is no change in enrollment?
Answer by honey143(2) About Me  (Show Source):
You can put this solution on YOUR website!


Let us see first how many teachers are they for a class size of 30 students per teacher.

%281200cross%28students%29%29%281teacher%2F30cross%28students%29%29
red%2840teachers%29} Original number of teachers


For new class size:
%281200cross%28students%29%29%281teacher%2F24cross%28students%29%29
red%2850teachers%29} New number of teachers


Therefore, the school needs additional, 50-40 = 10 teachers, Answer