Question

Question 92

In a class of 60 students, the number of girls is one third the number of boys. Find the number of girls and boys in the class.

Answer 1

As per the given information in the question, the total number of students in class = 60.
Let x be the number of boys in the class.
Then, the number of girls in the class = $\frac{x}{3}$
According to the question,
$x+\frac{x}{3}=60\Rightarrow \frac{3x+x}{3}=60\Rightarrow \frac{4x}{3}=60\Rightarrow 4x=60\times 3\Rightarrow 4x=180\Rightarrow x=\frac{180}{4}=45$
Hence, the number of boys in the class is 45 and the number of girls in the class is $\frac{45}{3}$, i.e. 15.