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There are between 24 and 40 students in a class.

The ratio of boys to girls is 4:7
How many students are in the class?

User Kakayou
by
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1 Answer

6 votes

Given:

There are between 24 and 40 students in a class.

The ratio of boys to girls is 4:7

To find:

The number of students in the class.

Solution:

Let the number of boys are girls are 4x and 7x respectively, where, x must be a positive integer because number of boys and girls is always a positive integer. Then, the total number of students is


\text{Total students}=4x+7x


\text{Total students}=11x

It means total number of students is multiply of 11.

Multiples of 11 are 11, 22, 33, 44, ... . So, multiples of 11 between 24 and 40 is 33.

Therefore, the total number of students in the class is 33.

User Guido Kitzing
by
8.7k points

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