Question

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

Strength : Number of boys $=$______

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$

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

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

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