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There are 20 girls and 15 boys in a class. What is the ratio of the number of girls to the number of boys?

Last updated date: 13th Jun 2024
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Hint: Here, we will divide the number of girls with the number of boys. Then we will convert the obtained fraction in the simplest form that the fraction could be in to find the required ratio.

$\Rightarrow \dfrac{{20}}{{15}}$
$\Rightarrow \dfrac{{20 \div 5}}{{15 \div 5}} \\ \Rightarrow \dfrac{4}{3} \\$
Therefore, the answer in its simplest form is $4:3$.
Note: We know that a rational number is a number that can expressed as the quotient or fraction of two integers, that is, $\dfrac{p}{q}$ where $p$ and $q$ are integers and $q$ is not equal to zero. We need to know that the rational numbers are closed under addition, multiplication and division, but not closed under subtraction. So we can divide the numerator and denominator by the same number and it won’t affect the fraction. We will not divide the numerator and denominator with different numbers as it will lead to wrong answers.