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

Izayah Terrell

Mathematics

2 July, 17:14

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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Raphael · 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.