Question

In a class of $45$ students the ratio of boys to girls is $3:2$. Find
The number of girls in the class.
The number of boys in the class.
The ratio of number of boys to the total number of students.

Answer 1

Solution:

$3x+2x=45$

$5x=45$

$x=9$

$\therefore$ Boys:girls in ratio $27:18$

Number of girls in class is $18$

Number of boys in class is $27$

Ratio of boys to total students is $27:45$ that is $3:5$