A school has 18 classes with 35 students in each class. in order to reduce class size to 30, how many new classes must be formed?

Question

Mathematics

Audrina

15 September, 12:15

A school has 18 classes with 35 students in each class. in order to reduce class size to 30, how many new classes must be formed?

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Answers (1)

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Drew · Answer 1

18*35 - number of the students at school.

x - is a number of classes if it is going to be 30 students per class, then

30x - number of the students at school.

So,

18*35 = 30x

x = (18*35) / 30 = 21 classes should be if it is going to be 30 students per class.

21 - 18 = 3 new classes must be formed.