Question

If in a class there are $30$ girls and $18$ boys, then

Number of girls : strength $=$______

Answer 1

Given that,

Number of girls in the class $=30$

Number of boys in the class $=18$

Strength of the class $=$ Number of girls in the class $+$Number of boys in the class

$=$$30+18$

$=$$48$

Number of girls : Strength $=$$30:48$

Lowest form of $30:48$$=\frac{30}{48}=\frac{5}{8}=5:8$ ( Divide both $30$ and $48$ by their HCF $6$)

Hence, Number of girls : Strength$=$$5:8$