Question

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

Number of boys : 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 boys : Strength $=$$18:48$

Lowest form of $18:48$$=\frac{18}{48}=\frac{3}{8}=3:8$ ( Divide both $18$ and $48$ by their HCF $6$)

Hence, Number of boys : Strength$=$$3:8$