Question

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

Number of girls : Number of boys $=$______

Answer 1

Given that,

Number of girls in the class $=30$

Number of boys in the class $=18$

Number of girls : Number of boys $=$$30:18$

Lowest form of $30:18$$=\frac{30}{18}=\frac{5}{3}=5:3$ ( Divide both $30$ and $18$ by their HCF $6$)

Hence, Number of girls : Number of boys $=$$5:3$